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FAN5232 Datasheet(PDF) 2 Page - Fairchild Semiconductor

No. de pieza FAN5232
Descripción Electrónicos  Adjustable PWM Buck Controller for LCD PCs
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Fabricante Electrónico  FAIRCHILD [Fairchild Semiconductor]
Página de inicio  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN5232 Datasheet(HTML) 2 Page - Fairchild Semiconductor

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FAN5232
PRODUCT SPECIFICATION
2
REV. 1.1.1 10/7/02
Pin Assignments
Pin Description
Absolute Maximum Ratings1
Note:
1. Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if
Operating Conditions are not exceeded.
Pin Number
Pin Name
Pin Function Description
1
VBATT
Battery Voltage. Battery voltage sensor.
2
3V_ALWAYS
3.3V-ALWAYS Linear Regulator. Total load current on pins 2 and 3 together
must not exceed 50mA.
3
5V_ALWAYS
5V-ALWAYS Linear Regulator. Total load current on pins 2 and 3 together
must not exceed 50mA.
4
AGND
Analog Ground.
5SDWN
IC Shutdown. Puts entire chip into shutdown. OFF=0. ON=1.
6
SDNADJ
Shutdown and Softstart for the Switcher. OFF=0. ON=1.
7
PWRGD
Switcher Output OK. An open collector output that will be low if the switcher
output is out of spec.
8
VFBSW
Voltage Feedback for the Switcher.
9
PGND
Ground for the Switcher. Connect by the shortest possible path to the source
of the low side MOSFET.
10
LSD
Low Side FET Driver for the Switcher. Connect this pin through a resistor to
the gate of an N-channel MOSFET.
11
SW
High Side FET Source and Low Side FET Drain Switching Node.
12
ISNS
Current Feedback for the Switcher. Connect by the shortest possible path to
a resistor connected to the drain of the low side MOSFET.
13
HSD
High Side FET Driver for the Switcher. Connect this pin through a resistor to
the gate of an N-channel MOSFET.
14
CPUMP
Charge Pump for the Switcher. Generates gate drive voltage for the high-side
MOSFET.
Parameter
Conditions
Min.
Typ.
Max.
Units
VBATT Pin
-0.3
29
V
PHASE, IFB, SDWN Pins
-5
29
V
CPUMP, HSD Pins
-0.3
34
V
All Other Pins
-0.3
6.5
V
Thermal Resistance,
θJ-A
θJ-C
100
32
°C/W
°C/W
Junction Temperature
150
°C
Storage Temperature
-65
150
°C
Lead Temperature, Soldering 10 sec.
300
°C
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VBATT
3V_ALWAYS
5V_ALWAYS
AGND
PWRGD
CPUMP
HSD
ISNS
SW
LSD
PGND
VFB
SDWN
SDNADJ


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