FAN5602,FAN5602_09,FAN5602MP5X

Part No.:
FAN5602,FAN5602_09,FAN5602MP5X
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Download
Description:
Universal (Step-Up/Step-Down) Charge Pump Regulated DC/DC Converter
File Size:
1256 K
Page:
13 Pages
Logo:
Maker:
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
PCB Prototype

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PCB Datasheet:1PCB Datasheet:1
FAN5602 — Universal (Step-Up/Step-Down) Charge Pump Regulated DC/DC Converter
August 2009
FAN5602 — Universal (Step-Up/Step-Down) Charge
Pump Regulated DC/DC Converter
Features
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
IN
= 3.6V
±3% Output Voltage Accuracy
I
CC
< 1µA in Shutdown Mode
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
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.
Applications
Cell Phones
Handheld Computers
Portable RF Communication Equipment
Core Supply to Low-Power Processors
Low-Voltage DC Bus
DSP Supplies
Ordering Information
Part Number
FAM6502MP45X
FAN5602MP5X
Note:
1. Reference MLP08D Option B ONLY.
2.
For Fairchild’s definition of “green” Eco Status, please visit:
http://www.fairchildsemi.com/company/green/rohs_green.html.
Package
3x3mm 8-Lead MLP
3x3mm 8-Lead MLP
Eco Status
Green
Green
Output Voltage, N
VOM
4.5V
5.0V
Application Diagram
Input 2.7V to 5.5V
V
IN
ENABLE
1
C
IN
C
B
C2-
C2+
2
3
4
FAN5602
8
6
7
5
C1+
V
OUT
C
OUT
GND
C1-
Figure 1. Typical Application Diagram
© 2005 Fairchild Semiconductor Corporation
FAN5602 Rev. 1.5.3
www.fairchildsemi.com