CS51413EDR8G ON Semiconductor, CS51413EDR8G Datasheet

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CS51413EDR8G

Manufacturer Part Number
CS51413EDR8G
Description
IC REG BUCK LV 1.5A SYNC 8SOIC
Manufacturer
ON Semiconductor
Type
Step-Down (Buck)r
Datasheet

Specifications of CS51413EDR8G

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Current - Output
1.5A
Frequency - Switching
520kHz
Voltage - Input
4.5 ~ 40 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Mounting Style
SMD/SMT
Primary Input Voltage
40V
No. Of Outputs
1
Output Current
1.5A
No. Of Pins
8
Operating Temperature Range
-40°C To +85°C
Current Rating
1.5A
Filter Terminals
SMD
Input Voltage Primary Max
40V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
CS51413EDR8GOS
CS51411, CS51412,
CS51413, CS51414
1.5 A, 260 kHz and 520 kHz,
Low Voltage Buck
Regulators with External
Bias or Synchronization
Capability
are fixed−frequency operating at 260 kHz and 520 kHz. The regulators
use the V
response, the best overall regulation and the simplest loop
compensation for today’s high−speed logic. These products
accommodate input voltages from 4.5 V to 40 V.
CS51412 and CS51414 have the option of powering the controller
from an external 3.3 V to 6.0 V supply in order to improve efficiency,
especially in high input voltage, light load conditions.
1.5 A of output current, and is biased by an external “boost” capacitor
to ensure saturation, thus minimizing on−chip power dissipation.
Protection circuitry includes thermal shutdown, cycle−by−cycle
current limiting and frequency foldback. The CS51411 and CS51413
are functionally pin−compatible with the LT1375. The CS51412 and
CS51414 are functionally pin−compatible with the LT1376.
Features
© Semiconductor Components Industries, LLC, 2008
October, 2008 − Rev. 19
The CS5141X products are 1.5 A buck regulator ICs. These devices
The CS51411 and CS51413 contain synchronization circuitry. The
The on−chip NPN transistor is capable of providing a minimum of
Regulation and Simplified Design
Reduces Short Circuit Power Dissipation
Efficiency
V
2.0% Error Amp Reference Voltage Tolerance
Switch Frequency Decrease of 4:1 in Short Circuit Conditions
BOOST Pin Allows “Bootstrapped” Operation to Maximize
Sync Function for Parallel Supply Operation or Noise Minimization
Shutdown Lead Provides Power−Down Option
85 mA Quiescent Current During Power−Down
Thermal Shutdown
Soft−Start
Pin−Compatible with LT1375 and LT1376
Pb−Free Packages are Available
2
Architecture Provides Ultrafast Transient Response, Improved
2
™ control architecture to provide unmatched transient
1
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
18−LEAD DFN
MN SUFFIX
CASE 751
CASE 505
8
D SUFFIX
SOIC−8
ORDERING INFORMATION
1
5141x = Device Code
A
L, WL = Wafer Lot
Y, YY
W, WW = Work Week
G
1
http://onsemi.com
18
= Assembly Location
= Year
= Pb−Free Package
x = 1, 2, 3 or 4
y = E or G
MARKING DIAGRAMS
Publication Order Number:
1
1
8
AWLYYWW G
CS5141xy
ALYWy
5141x
G
G
CS51411/D
18

CS51413EDR8G Summary of contents

Page 1

CS51411, CS51412, CS51413, CS51414 1.5 A, 260 kHz and 520 kHz, Low Voltage Buck Regulators with External Bias or Synchronization Capability The CS5141X products are 1.5 A buck regulator ICs. These devices are fixed−frequency operating at 260 kHz and 520 ...

Page 2

CS51411 BOOST GND SW SHDNB SYNC CS51412 BOOST GND SW BIAS SHDNB PACKAGE PIN DESCRIPTION SOIC−8 DFN18 Package Pin # Package Pin ...

Page 3

PRODUCT SELECTION GUIDE Part Number Frequency CS51411E CS51411G CS51412E CS51412G CS51413E CS51413G CS51414E CS51414G 4.5 V − 100 mF 4 Shutdown 5 SYNC 0.1 mF Figure 1. Application Diagram, 4.5 V − 3.3 ...

Page 4

MAXIMUM RATINGS Pin Name V Max BOOST 7 SHDNB 7.0 V SYNC 7.0 V BIAS 7 7 GND 7.0 V ELECTRICAL CHARACTERISTICS (−40°C ...

Page 5

ELECTRICAL CHARACTERISTICS (−40°C < T 0°C < T < 70°C (CS51411G/2G/3G/4G), 4.5 V< Characteristic Sync Sync Frequency Range Sync Frequency Range Sync Pin Bias Current Sync Threshold Voltage Shutdown Shutdown Threshold Voltage Shutdown Pin Bias Current Thermal Shutdown ...

Page 6

SHDNB V IN Shutdown Comparator 2.9 V LDO + Voltage BIAS Regulator − 1 1.270 V − Amplifier SYNC 5.0 mA Artificial Oscillator Ramp + − ∑ + − PWM Com- parator − − ...

Page 7

THEORY OF OPERATION 2 V Control The CS5141X family of buck regulators utilizes a V2 control technique and provides a high level of integration to enable high power density design optimization. Every pulse width modulated controller configures basic control elements ...

Page 8

Control Ramp Generation In original V2 designs, the control ramp VCR was generated from the converter’s output ripple. Using a current derived ramp provides the same benefits as current mode, namely input feed forward, single pole output filter compensation and ...

Page 9

Some representative efficiency data is shown in Figure 10. 100 Vin = 5.5 V, Vout= 3 Vin = 7.5 V, Vout = 5.0 V Vin = 15V, Vout = 500 I ...

Page 10

The maximum load current, given by the following formula under continuous conduction mode, is less than the Current Limit due to the ripple current O(MAX) + ...

Page 11

5mA SHDNB Q1 20k D1 8V (a) 0.65V SHDNB (b) (c) Figure 15. SHDNB pin equivalent internal circuit (a) and practical interface examples (b), (c). Figure 15(a) depicts the SHDNB pin equivalent internal ...

Page 12

Figure 17, and the benefit of the foldback frequency and current limit is self−evident. Figure 17. In Short Circuit, the Foldback Current and Foldback Frequency Limit the Switching Current to Protect the IC, Inductor and Catch Diode Thermal Considerations A ...

Page 13

P1 on and current is routed to the internal bias circuitry from the BIAS pin. Here is an example of the power savings: The input voltage range for The input in voltage ...

Page 14

Ceramic capacitors are now available in values over 10 mF. Since the ceramic capacitor has low ESR and ESL, a single ceramic capacitor ...

Page 15

... For the diode to survive the short circuit condition, the current rating of the diode should be equal to the Foldback Current Limit. See Table 1 for Schottky diodes from ON Semiconductor which are suggested for CS5141X regulator. Inductor Selection ...

Page 16

Table 1. Part Number V BREAKDOWN 1N5817 1N5818 1N5819 MBR0520 MBR0530 MBR0540 MBRS120 MBRS130 MBRS140 Table 2. Vendor Coiltronics THIN−PAC: SMT, toroid, low profile Coilcraft DS/DT 1608: SMT, barrel, magnetically shielded DS/DT 3316: SMT, barrel, magnetically shielded Pulse (V) I ...

Page 17

V − input Figure 25. Additional Application Diagram, 5.0 V − −5.0 V/400 mA Inverting Converter 100 mF V ...

Page 18

... ORDERING INFORMATION Device Operating Temperature Range CS51411ED8 CS51411ED8G CS51411EDR8 CS51411EDR8G CS51411EMNR2G CS51412ED8 CS51412ED8G CS51412EDR8 CS51412EDR8G CS51412EMNR2G CS51413ED8 CS51413ED8G CS51413EDR8 CS51413EDR8G CS51413EMNR2G CS51414ED8 CS51414ED8G CS51414EDR8 CS51414EDR8G CS51414EMNR2G CS51411GD8 CS51411GD8G CS51411GDR8 CS51411GDR8G CS51411GMNR2G CS51412GD8 CS51412GD8G CS51412GDR8 CS51412GDR8G CS51412GMNR2G CS51413GD8 CS51413GD8G CS51413GDR8 CS51413GDR8G CS51413GMNR2G ...

Page 19

... G C SEATING PLANE −Z− 0.25 (0.010 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. PACKAGE THERMAL DATA Parameter R qJC R qJA PACKAGE DIMENSIONS SOIC−8 NB CASE 751−07 ISSUE ...

Page 20

... 0.05 C NOTE 3 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. Parameter Typical N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81− ...

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