FAN5602 Fairchild Semiconductor, FAN5602 Datasheet

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FAN5602

Manufacturer Part Number
FAN5602
Description
The FAN5602 is a universal switched capacitor DC/DC converter capable of step-up or step-down operation
Manufacturer
Fairchild Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
FAN5602MP45X
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Part Number:
FAN5602MP5X
Manufacturer:
PANASONIC
Quantity:
872
FAN5602 Rev. 1.5.3
© 2005 Fairchild Semiconductor Corporation
FAN5602 — Universal (Step-Up/Step-Down) Charge
Pump Regulated DC/DC Converter
Features
Applications
Ordering Information
Note:
1. Reference MLP08D Option B ONLY.
2.
Application Diagram
Low-Noise, Constant-Frequency Operation at Heavy Load
High-Efficiency, Pulse-Skip (PFM) Operation at Light Load
Switch Configurations (1:3, 1:2, 2:3, 1:1, 3:2, 2:1, 3:1)
92% Peak Efficiency
Input Voltage Range: 2.7V to 5.5V
Output Current: 4.5V, 100mA at V
±3% Output Voltage Accuracy
I
1MHz Operating Frequency
Shutdown Isolates Output from Input
Soft-Start Limits Inrush Current at Startup
Short-Circuit and Over-Temperature Protection
Minimum External Component Count
No Inductors
Cell Phones
Handheld Computers
Portable RF Communication Equipment
Core Supply to Low-Power Processors
Low-Voltage DC Bus
DSP Supplies
CC
FAM6502MP45X
< 1µA in Shutdown Mode
FAN5602MP5X
Part Number
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
C
V
IN
IN
3x3mm 8-Lead MLP
3x3mm 8-Lead MLP
Input 2.7V to 5.5V
IN
Package
= 3.6V
Figure 1. Typical Application Diagram
C
B
GND
C2+
C2-
1
2
3
4
FAN5602
Description
The FAN5602 is a universal switched capacitor DC/DC
converter capable of step-up or step-down operation.
Due to its unique adaptive fractional switching topology,
the device achieves high efficiency over a wider input/
output voltage range than any of its predecessors. The
FAN5602 utilizes resistance-modulated loop control,
which produces lower switching noise than other topolo-
gies. Depending upon actual load conditions, the device
automatically switches between constant-frequency and
pulse-skipping modes of operation to extend battery life.
The FAN5602 produces a fixed regulated output within
the range of 2.7V to 5.5V from any type of voltage
source. High efficiency is achieved under various input/
output voltage conditions because an internal logic circuit
automatically reconfigures the system to the best possi-
ble topology. Only two 1µF bucket capacitors and one
10µF output capacitor are needed. During power on,
soft-start circuitry prevents excessive current drawn from
the supply. The device is protected against short-circuit
and over-temperature conditions.
The FAN5602 is available with 4.5V and 5.0V output volt-
ages in a 3x3mm 8-lead MLP package.
8
6
7
5
Eco Status
Green
Green
C1-
C1+
ENABLE
C
OUT
V
OUT
Output Voltage, N
4.5V
5.0V
www.fairchildsemi.com
August 2009
VOM

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FAN5602 Summary of contents

Page 1

... During power on, soft-start circuitry prevents excessive current drawn from the supply. The device is protected against short-circuit and over-temperature conditions. The FAN5602 is available with 4.5V and 5.0V output volt- ages in a 3x3mm 8-lead MLP package. Package 3x3mm 8-Lead MLP 3x3mm 8-Lead MLP Input 2 ...

Page 2

... Block Diagram BAND GAP SOFT-START CURRENT SENSE Light load FB EN PFM BG REF MODE V IN 150mV SC V OUT 1.6V UVLO V IN © 2005 Fairchild Semiconductor Corporation FAN5602 Rev. 1.5 ENABLE FB ERROR AMP BG EN DRIVER OSCILLATOR OUT Figure 2. Block Diagram 2 C1- C1 ...

Page 3

... Pin Descriptions Pin # Name C2+ 3 C2- 4 GND 5 C1 OUT 7 C1+ 8 ENABLE © 2005 Fairchild Semiconductor Corporation FAN5602 Rev. 1.5.3 V ENABLE C2 OUT GND 4 5 C1- 3x3mm 8-Lead MLP Figure 3. Pin Assignments Supply Voltage Input. Bucket Capacitor2. Positive Connection. ...

Page 4

... Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter V Input Voltage IN I Load Current L T Ambient Temperature A Note: 3. Refer to Figure 9 in Typical Performance Characteristics. © 2005 Fairchild Semiconductor Corporation FAN5602 Rev. 1.5.3 Parameter Min. -3.0 -3.0 -55 Condition V < 4.5 & 5.5 Max. Unit 6 ...

Page 5

... Voltage ENABLE Logic Input Low V IL Voltage ENABLE Logic Input Bias I EN Current t V Turn-On Time ON OUT V Ripple OUT © 2005 Fairchild Semiconductor Corporation FAN5602 Rev. 1.5 10µF, ENABLE = OUT IN Condition V ≥ 0. NOM 0mA < I <100mA LOAD V ≥ 1 ...

Page 6

... Figure 4. Quiescent Current vs. Input Voltage 4.55 4.50 I LOAD V OUT 4.45 4.40 4.35 4.30 2.0 2.5 3.0 3.5 4.0 Input Voltage (V) Figure 6. Line Regulation 4.6 4.5 4.4 4.3 4.2 4.1 4 100 150 Load Currrent (mA) Figure 8. Load Regulation © 2005 Fairchild Semiconductor Corporation FAN5602 Rev. 1.5 4.5 5.5 Figure 5. Shutdown Current vs. Input Voltage 100 90 = 100mA 4.5 5.0 5.5 6.0 2.500 700.0 600 ...

Page 7

... Input Voltage (V) Figure 10. Output Voltage vs. Input Volt 100 150 Figure 12. Peak Efficiency vs. Load Current © 2005 Fairchild Semiconductor Corporation FAN5602 Rev. 1.5.3 (Continued) 4.5 4.45 4.4 4.35 4 age Figure 11. Output Voltage vs. Ambient Temperature V = 3.6V IN 200 250 300 Figure 13. Enable Threshold vs. Input Voltage 5 ...

Page 8

... V = 4.2V IN Time (100 µs/div) Figure 17. Output Ripple I = 300mA OUT V = 3.6V IN Time (100 µs/div) Figure 19. Output Ripple © 2005 Fairchild Semiconductor Corporation FAN5602 Rev. 1.5.3 (Continued) = 1µ 4.5V unless otherwise noted. B OUT 200mA OUT V = 3.6V IN Time (100 µs/div) Figure 16. Output Ripple ...

Page 9

... V The internal logic in the FAN5602 monitors the input and the output compares them, and automatically selects the switch configuration to achieve the highest efficiency. The step-down modes 3:2, 2:1, and 3:1 can be under- stood by reversing the function of V above discussion ...

Page 10

... The dynamic loss from the switching the power transistors is not small and increases its propor- tion of the total power consumption as the load gets light. To save power, the FAN5602 switches, when the load is less than 10mA, from constant frequency to pulse-skip- ping mode (PFM) for modes 2:3(3:2), 1:2(2:1) and 1:3(3:1), except mode 1:1 ...

Page 11

... Application Information Using the FAN5602 to Drive LCD Backlighting The FAN5602 4.5V option is ideal for driving the back- lighting and flash LEDs for portable devices. One FAN5602 device can supply the roughly 150mA needed to power both the backlight and the flash LEDs. Even ...

Page 12

... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2005 Fairchild Semiconductor Corporation FAN5602 Rev. 1.5.3 12 www.fairchildsemi.com ...

Page 13

... Fairchild Semiconductor Corporation FAN5602 Rev. 1.5.3 13 www.fairchildsemi.com ...

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