FAN5602 Datasheet PDF - Fairchild Semiconductor
| Part Number | FAN5602 | |
| Description | Universal (Step-Up/Step-Down) Charge Pump Regulated DC/DC Converter | |
| Manufacturers | Fairchild Semiconductor | |
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www.fairchildsemi.com
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
• Adaptive Seven 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:3.3V, 200mA at VIN = 3.6V
• ±3% Output Voltage Accuracy
• ICC < 1µA in Shutdown Mode
• 1MHz Operating Frequency
• Shutdown Isolates Output from Input
• Soft-Start Limits Inrush Current at Start-up
• Short Circuit and Over Temperature Protection
• Minimum External Component Count
• No Inductors
Applications
• Cell Phones
• Handheld Computers
• Portable RF Communication Equipment
• Core Supply to Low Power Processors
• Low Voltage DC Bus
• DSP Supplies
Description
The FAN5602 is a universal switched capacitor DC/DC con-
verter 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 topologies. Depending upon
actual load conditions, the device automatically switches
between constant frequency and pulse skipping (PFM)
modes of operation in order 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 effi-
ciency is achieved under any input/output voltage conditions
because an internal logic circuitry automatically reconfigures
the system to the best possible topology. Only two 1µF
bucket capacitors and one 10µF output capacitor are needed.
During power on soft start circuitry prevents excessive cur-
rent drawn from the supply. The device is protected against
short circuit and over temperature conditions.
The FAN5602 is available with 3.3V, 4.5V, and 5.0V output
voltage. Any other output voltage option within the 1.5V to
5V range is available upon request. The FAN5602 is avail-
able in 8-lead MSOP and 3x3mm 8-lead MLP packages
Typical Application
Input 2.7V to 5.5V
VIN
1
CIN
C2+
2
CB
3
C2-
GND 4
8
6
FAN5602
7
5
ENABLE
C1+
VOUT
COUT
C1-
REV. 1.1 10/7/04
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PRODUCT SPECIFICATION
Typical Performance Characteristics
TA = 25°C, VOUT = 4.5V unless otherwise noted.
Quiescent Current vs Input Voltage
180
160
140
120
100
80
60
40
20
0
1.5 2.5 3.5 4.5 5.5
Input Voltage (V)
Line Regulation
4.55
4.50
4.45
ILOAD = 100mA
Vout = 4.5V
4.40
4.35
4.30
2.0
2.5
3.0 3.5 4.0 4.5 5.0 5.5
Input Voltage (V)
6.0
FAN5602
Shutdown Current vs Input Voltage
80
70
60
50
40
30
20
10
0
1234 5
Input Voltage (V)
6
100
90
80
70
60
50
40
30
20
2.500
Efficiency vs Input Voltage
Load Current = 10mA
Load Current = 50mA
Load Current = 100mA
Load Current = 150mA
3.000
3.500 4.000 4.500
Input Voltage
5.000 5.500
4.6
4.5
4.4
4.3
4.2
4.1
4.0
1
Load Regulation
Vin = 3.6V
50 100 150 200 250 300 350
Load Currrent (mA)
Output Current Capability vs Input Voltage
700.0
600.0
500.0
400.0
∆VOUT < 10%
∆VOUT < 3%
300.0
200.0
100.0
0.0
2 2.5 3 3.5 4 4.5 5
Input Voltage (V)
REV. 1.1 10/7/04
5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for FAN5602 electronic component. |
| Information | Total 16 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ FAN5602.PDF Datasheet ] | |
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