IC DUAL STP-DWN CONV 10-SON

TPS62400DRCT

Manufacturer Part NumberTPS62400DRCT
DescriptionIC DUAL STP-DWN CONV 10-SON
ManufacturerTexas Instruments
TypeStep-Down (Buck)
TPS62400DRCT datasheet
 


Specifications of TPS62400DRCT

Internal Switch(s)YesSynchronous RectifierYes
Number Of Outputs2Voltage - Output0.6 ~ 6 V
Current - Output400mA, 600mAFrequency - Switching2.25MHz
Voltage - Input2.5 ~ 6 VOperating Temperature-40°C ~ 85°C
Mounting TypeSurface MountPackage / Case10-SON
Power - Output2.05WTopologyBuck
Output Voltage6 VOutput Current0.4 A
Input Voltage6 VDuty Cycle (max)100 %
Switching Frequency2250 KHzMaximum Operating Temperature+ 85 C
Mounting StyleSMD/SMTMinimum Operating Temperature- 40 C
For Use WithTPS62400EVM-167 - EVAL MOD FOR TPS62400Lead Free Status / RoHS StatusLead free / RoHS Compliant
Other names296-20690-2  
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2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package
Check for Samples: TPS62400, TPS62401, TPS62402, TPS62403,
FEATURES
1
High Efficiency—Up to 95%
2
V
Range From 2.5 V to 6 V
IN
2.25 MHz Fixed Frequency Operation
Output Current 400 mA and 600 mA
Adjustable Output Voltage From 0.6V to V
Pin Selectable Output Voltage Supports
Simple Dynamic Voltage Scaling
EasyScale™ Optional One-Pin Serial Interface
Power Save Mode at Light Load Currents
180° Out of Phase Operation
Output Voltage Accuracy in PWM Mode ±1%
Typical 32-mA Quiescent Current for Both
Converters
100% Duty Cycle for Lowest Dropout
Available in a 10-Pin QFN (3×3mm)
APPLICATIONS
Cell Phones, Smart-phones
PDAs, Pocket PCs
OMAP™ and Low Power DSP Supply
Portable Media Players
Digital Radio
Digital Cameras
TPS62401
VIN 2.5 V – 6 V
VIN
FB 1
2.2 H
m
10 F
m
SW1
DEF_1
EN_1
EN_2
2.2 H
m
SW2
MODE/
DATA
ADJ2
GND
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EasyScale, OMAP, PowerPAD are trademarks of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
DESCRIPTION
The TPS6240x device series are synchronous dual
step-down DC-DC converters optimized for battery
powered portable applications. They provide two
independent output voltage rails powered by 1-cell
Li-Ion or 3-cell NiMH/NiCD batteries. The devices are
IN
also suitable to operate from a standard 3.3V or 5V
voltage rail.
With an input voltage range of 2.5V to 6V the
TPS62400 is ideal to power portable applications like
smart phones, PDAs and other portable equipment.
With the EasyScale™ serial interface the output
voltages can be modified during operation. The fixed
output
voltage
TPS62403, and TPS62404 support one pin controlled
simple Dynamic Voltage Scaling for low power
processors.
The TPS6240x operates at 2.25MHz fixed switching
frequency and enters the power save mode operation
at light load currents to maintain high efficiency over
the entire load current range. For low noise
applications the devices can be forced into fixed
frequency PWM mode by pulling the MODE/DATA
pin high. In the shutdown mode, the current
consumption is reduced to 1.2mA, typical. The
devices allow the use of small inductors and
capacitors to achieve a small solution size.
The TPS62400 is available in a 10-pin leadless
package (3×3mm QFN)
V
: 1.575 V
out1
400 mA
100
10 F
m
90
80
70
V OUT2 = 1.8 V
V
: 1.8 V
out2
60
600 mA
50
10 F
m
40
30
20
10
0
0.01
TPS62400, TPS62401
TPS62402, TPS62403, TPS62404
SLVS681E – JUNE 2006 – REVISED APRIL 2010
TPS62404
versions
TPS62401,
TPS62402,
V IN = 3.6 V
MODE/DATA = 0
V OUT1 = 1.575 V
0.1
1
10
100
I OUT mA
Copyright © 2006–2010, Texas Instruments Incorporated
1000

TPS62400DRCT Summary of contents

  • Page 1

    ... Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. EasyScale, OMAP, PowerPAD are trademarks of Texas Instruments. 2 PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty ...

  • Page 2

    ... TPS62402, TPS62403, TPS62404 SLVS681E – JUNE 2006 – REVISED APRIL 2010 This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications ...

  • Page 3

    ... These values are valid when the device is disabled (EN1 and EN2 low) and supply voltage V until the device has been enabled first time (EN1 or EN2 = high). After first enable, Note 3 becomes valid. Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): ...

  • Page 4

    ... PWM operation mode (9) Activation time to start switching Time to ramp from OUT = V /32Ω. PSM IN the converter starts switching and ramps Start Copyright © 2006–2010, Texas Instruments Incorporated TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com MIN TYP MAX UNIT 2x 400 ms t H_LB ...

  • Page 5

    ... GND for both converters; connect this pin to the PowerPAD™ EN2 9 I Enable Input for Converter 2, active high SW2 10 I/O Switch Pin of Converter 2. Connect to Inductor. PowerPAD™ Connect to GND Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): ADJ2 SW2 1 10 MODE/DATA EN2 2 9 GND ...

  • Page 6

    ... TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com PMOS Current Limit Comparator VIN Gate Driver SW1 GND NMOS Current Limit Comparator Load Comparator PMOS Current Limit Comparator VIN Gate Driver SW2 GND NMOS Current Limit Comparator Load Comparator Copyright © 2006–2010, Texas Instruments Incorporated ...

  • Page 7

    ... Output Voltage Ripple in Forced PWM Mode Output Voltage Ripple in PWM Mode Forced PWM/ PFM Mode Transition Load Transient Response PFM/PWM Load Transient Response PWM Operation Line Transient Response Startup Timing One Converter Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): TPS62400 SW1 2 ...

  • Page 8

    ... V = 1.575 V OUT1 2 3 Power Save Mode Forced PWM Mode 30 MODE/DATA = 0 MODE/DATA = 100 1000 0.01 0.1 TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com FIGURE Forced PWM Mode MODE/DATA = 100 1000 I mA OUT Figure 2. Copyright © 2006–2010, Texas Instruments Incorporated ...

  • Page 9

    ... O1 MODE/DATA = Low MODE/DATA = Low MODE/DATA = High 10 0 0.01 0 Output Current - mA O Figure 5. Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): EFFICIENCY TPS62400 VOUT 2 = 3.3V 100 V = 3.3 V OUT2 Power Save Mode Forced PWM Mode 30 MODE/DATA = 1 MODE/DATA = 0 20 ...

  • Page 10

    ... TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com EFFICIENCY OUT OUT I = 200 mA OUT Figure 4 PWM Mode Operation MODE/DATA = high, forced PWM Mode 1 10 100 OUT Figure 10. Copyright © 2006–2010, Texas Instruments Incorporated 6 1000 ...

  • Page 11

    ... IN IN 1.550 MODE/DATA = high, forced PWM Mode 1.525 1.500 0.01 0. OUT Figure 13. Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): DC OUTPUT ACCURACY VOUT2 = 1.8V 1.854 V = 1.8 V OUT2 MODE/DATA = low, PFM Mode, voltage positioning active 1.836 PWM Mode Operation 1.818 ...

  • Page 12

    ... Copyright © 2006–2010, Texas Instruments Incorporated TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com 85°C 25°C -40°C 3.5 4 4 Figure 16. R PMOS vs V DSON IN 85°C 25°C -40°C 3 ...

  • Page 13

    ... PWM MODE operation IOUT = 10mA VOUT = 1.8V 20mV/Div Inductor current 100mA/Div Time base - 400 ns/Div Figure 21. Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): LIGHT LOAD OUTPUT VOLTAGE RIPPLE IN POWER SAVE MODE Power Save Mode Mode/Data = low VOUT = 1.8V 20mV/Div ...

  • Page 14

    ... IOUT= 40mA Time base - 50 s/Div LINE TRANSIENT RESPONSE VIN 3.6V to 4.6V VIN 1V/Div VOUT 50mV/Div Time base - 400 s/Div Copyright © 2006–2010, Texas Instruments Incorporated TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com MODE/DATA = low PWM Mode operation IOUT1 = 360mA m Figure 24. ...

  • Page 15

    ... 1.575V OUT1 V : 1.8V OUT2 OUT1 OUT2 Time base - 100 ns/Div Figure 29. Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): TPS62401DEF1_PIN FUNCTION FOR OUTPUT VOLTAGE DEF_1 pin 2V/Div VOUT1 500mV/Div Icoil 500mA/Div = 3.6V, TYPICAL OPERATION V SW1 5V/Div I coil2 = 200mA ...

  • Page 16

    ... Product Folder Link(s): = 3.6V, V OUT1 V : 200mV/Div OUT1 V : 1.1V OUT1 = 200mA DETAILED DESCRIPTION TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com CHANGE WITH EASYSCALE MODE/DATA 2V/Div V : 1.5V OUT1 V 3.8V IN ACKN = off I = 150mA OUT1 REG_DEF_1_Low Time base - 100 s/Div m Figure 32. Copyright © 2006–2010, Texas Instruments Incorporated ...

  • Page 17

    ... Power Save Mode operation. It provides more headroom for both the voltage drop at a load step, and the voltage increase at a load throw-off. This improves load transient behavior. Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): TPS62402, TPS62403, TPS62404 ...

  • Page 18

    ... Product Folder Link(s): Smooth increased load PFM Mode light load PWM Mode medium/heavy load Figure 34. 95 Startup t RAMP Figure 34. Soft Start RDSon ) R max L TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com Fast load transient PWM Mode medium/heavy load Copyright © 2006–2010, Texas Instruments Incorporated (3) ...

  • Page 19

    ... Each register content (and therefore output voltage) can be changed individually via the EasyScale™ interface. This makes the device very flexible in terms of output voltage setting; see Table 4. Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): TPS62402, TPS62403, TPS62404 TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 TPS62400, TPS62401 SLVS681E – ...

  • Page 20

    ... DEF_1 pin (170ms) the interface is ready for data reception. Start TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com (P-MOS and N-MOS). Once the LIMF . EOS Table 6. To generate these output Copyright © 2006–2010, Texas Instruments Incorporated ...

  • Page 21

    ... MODE Selection Because the MODE/DATA pin is used for two functions, interface and a MODE selection, the device needs to determine when it has to decode the bit stream or to change the operation mode. Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): DESCRIPTION DEF_1 ...

  • Page 22

    ... Acknowledge condition may not be requested! t Address Byte Start DA7 DA0 RFA EOS TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com DATABYTE EOS DATA OUT ACK DESCRIPTION DATA Byte Mode, Static High or Low EOS Copyright © 2006–2010, Texas Instruments Incorporated ...

  • Page 23

    ... Figure 37. EasyScale™ Protocol Including Acknowledge MODE/DATA Power Save Mode Figure 39. MODE/DATA PIN: Mode Selection t Start Address Byte MODE/DATA Power Save Mode Figure 40. MODE/DATA Pin: Power Save Mode/Interface Communication Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): t DATA Byte Start DA0 RFA 0 T ...

  • Page 24

    ... TPS62403) 1.125 1.150 1.175 1.2 1.225 1.25 1.275 1.3 1.325 1.350 1.375 1.4 1.425 1.450 1.475 1.5 1.525 1.55 1.575 1.6 1.7 1.8 (default TPS62402) 1.9 (default TPS62404) Copyright © 2006–2010, Texas Instruments Incorporated TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com ...

  • Page 25

    ... Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): TPS62402, TPS62403, TPS62404 D4 TPS62400) (default TPS62400) OUT1 0.825 0.85 0.875 0.9 0.925 0.95 0.975 1.0 1.025 1.050 1.075 1.1 1.125 1.150 1.175 1.2 1.225 1.25 1.275 1.3 1.325 1.350 1.375 1.4 1 ...

  • Page 26

    ... TPS62401) 1.85 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 (default TPS62403) 2.85 3.0 TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com Copyright © 2006–2010, Texas Instruments Incorporated ...

  • Page 27

    ... TPS62401, V default = 1.8V OUT2 TPS62403, V default = 2.8V OUT2 TPS62402, TPS62404, V default = 3.3V OUT2 Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): APPLICATION INFORMATION with an internal reference voltage V REF typical 0.6V REF OUT2 TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 TPS62400, TPS62401 TPS62402, TPS62403, TPS62404 SLVS681E – ...

  • Page 28

    ... GND TPS62400 SW1 2 R11 270 kW DEF_1 R12 180 SW2 3 ff2 R21 33 pF 825 kW ADJ2 R22 220 kW GND Copyright © 2006–2010, Texas Instruments Incorporated TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com V = 1.5 V OUT1 400 mA OUT1 OUT1 V = 2.85 V OUT2 600 mA OUT2 OUT2 V = 1.5 V ...

  • Page 29

    ... EN_2 MODE/ DATA Figure 43. TPS62401 Fixed 1.575V/1.8V Outputs, low PFM Voltage Ripple Optimized VIN 2.5 V – Figure 44. TPS62401 Fixed 1.1V/1.8V Outputs, low PFM Ripple Voltage Optimized Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): TPS62401 SW1 DEF_1 2.2 H ...

  • Page 30

    ... L1 Vout 1 400 mA DEF 1.575 V DEF 1 µF DEF _1 L2 Vout 2 600 mA TPS 62401 : 1.8 V TPS 62403 : 2 µF ADJ 2 GND Copyright © 2006–2010, Texas Instruments Incorporated TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com V = 1.575 V OUT1 400 1.8 V OUT2 600 mA m Processor V Core V Core_Sel ...

  • Page 31

    ... Take into consideration that the core material from inductor to inductor differs and this difference has an impact on the efficiency. Refer to Table 7 and the typical application circuit examples for possible inductors. Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): TPS62402, TPS62403, TPS62404 TPS62403 FB 1 2.2 µ ...

  • Page 32

    ... Submit Documentation Feedback Product Folder Link(s): Table 7. List of Inductors ] INDUCTOR TYPE MIPW3226 LPS3010 VLF3010 VLF3014 LPS3015 LPS4018 ESR 8 Cout Figure 48. TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com SUPPLIER FDK Coilcraft TDK TDK Coilcraft Coilcraft Copyright © 2006–2010, Texas Instruments Incorporated (8) (9) ...

  • Page 33

    ... ADJ2 line to avoid capacitive coupling into the ADJ2 pin. A GND guard ring between the MODE/DATA pin and ADJ2 pin avoids potential noise coupling. VIN 3 V – ff2 R21 OUT2 R22 Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): TPS62400 VIN EN_1 IN EN_2 m MODE/ DATA FB 1 ...

  • Page 34

    ... TPS62402, TPS62403, TPS62404 SLVS681E – JUNE 2006 – REVISED APRIL 2010 34 Submit Documentation Feedback Product Folder Link(s): C OUT1 C IN GND Pin connected with Power Pad C OUT2 Figure 49. PCB Layout Copyright © 2006–2010, Texas Instruments Incorporated TPS62400 TPS62401 TPS62402 TPS62403 TPS62404 www.ti.com ...

  • Page 35

    ... Added TPS62404 device to 'Selectable Output Voltages for Converter 1' table. ............................................................... • Added TPS62404 device to 'Selectable Output Voltages for Converter 2' table. ............................................................... • Added TPS62404 device to 'Application Information' section. ........................................................................................... Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): REVISION HISTORY (Figure 7). ........................................................................................................ ...

  • Page 36

    ... PACKAGING INFORMATION Orderable Device (1) Package Type Package Status TPS62400DRCR ACTIVE SON TPS62400DRCRG4 ACTIVE SON TPS62400DRCT ACTIVE SON TPS62400DRCTG4 ACTIVE SON TPS62401DRCR ACTIVE SON TPS62401DRCRG4 ACTIVE SON TPS62401DRCT ACTIVE SON TPS62401DRCTG4 ACTIVE SON TPS62402DRCR ACTIVE SON TPS62402DRCRG4 ACTIVE SON TPS62402DRCT ACTIVE ...

  • Page 37

    Orderable Device (1) Package Type Package Status TPS62404DRCT ACTIVE SON (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy ...

  • Page 38

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing TPS62400DRCR SON DRC TPS62400DRCR SON DRC TPS62400DRCT SON DRC TPS62400DRCT SON DRC TPS62401DRCR SON DRC TPS62401DRCT SON DRC TPS62402DRCR SON DRC TPS62402DRCR SON DRC TPS62402DRCT SON DRC ...

  • Page 39

    ... Device Package Type TPS62400DRCR SON TPS62400DRCR SON TPS62400DRCT SON TPS62400DRCT SON TPS62401DRCR SON TPS62401DRCT SON TPS62402DRCR SON TPS62402DRCR SON TPS62402DRCT SON TPS62402DRCT SON TPS62403DRCR SON TPS62403DRCT SON TPS62404DRCR SON TPS62404DRCT SON PACKAGE MATERIALS INFORMATION Package Drawing Pins ...

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  • Page 43

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...