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參數(shù)資料
| 型號： | FAN5193MTCX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | TSSOP-24 |
| 文件頁數(shù)： | 12/21頁 |
| 文件大?。?/td> | 524K |
| 代理商： | FAN5193MTCX |
FAN5193
PRODUCT SPECIFICATION
2
REV. 1.0.1 2/4/02
Pin Assignments
Pin Denitions
Pin Number
Pin Name
Pin Function Description
1-5
VID0-4
Voltage Identification Code Inputs. These open collector/TTL compatible
inputs will program the output voltage over the ranges specified in Table 1.
6
BYPASS
5V Rail. Bypass this pin with a 1
F ceramic capacitor to AGND.
7
AGND
Analog Ground. Return path for low power analog circuitry. This pin should be
connected to a low impedance system ground plane to minimize ground loops.
8
LDRVB
Low Side FET Driver for B. Connect this pin to the gate of an N-channel
MOSFET for synchronous operation. The trace from this pin to the MOSFET gate
should be <0.5".
9
PGNDB
Power Ground B. Return pin for high currents flowing in low-side MOSFET.
Connect directly to low-side MOSFET source.
10
SWB
High side driver source and low side driver drain switching node B. Gate
drive return for high side MOSFET, and negative input for low-side MOSFET
current sense.
11
HDRVB
High Side FET Driver B. Connect this pin to the gate of an N-channel MOSFET.
The trace from this pin to the MOSFET gate should be <0.5".
12
BOOTB
Bootstrap B. Input supply for high-side MOSFET.
13
BOOTA
Bootstrap A. Input supply for high-side MOSFET.
14
HDRVA
High Side FET Driver A. Connect this pin to the gate of an N-channel MOSFET.
The trace from this pin to the MOSFET gate should be <0.5".
15
SWA
High side driver source and low side driver drain switching node A. Gate
drive return for high side MOSFET, and negative input for low-side MOSFET
current sense.
16
PGNDA
Power Ground A. Return pin for high currents flowing in low-side MOSFET.
Connect directly to low-side MOSFET source.
17
LDRVA
Low Side FET Driver for A. Connect this pin to the gate of an N-channel
MOSFET for synchronous operation. The trace from this pin to the MOSFET gate
should be <0.5".
18
VCC
VCC. Internal IC supply. Connect to system 12V supply, and decouple with a
0.1
F ceramic capacitor.
19
PWRGD
Power Good Flag. An open collector output that will be logic LOW if the output
voltage is not within +10/-15% of the nominal output voltage setpoint.
20
ILIM
Current Limit. A resistor from this pin to ground sets the over current trip level.
FAN5093
VID0
VID1
VID2
VID3
VID4
AGND
BYPASS
LDRVB
PGNDB
SWB
HDRVB
BOOTB
VFB
RT
ENABLE/SS
DROOP/E*
ILIM
PWRGD
VCC
LDRVA
PGNDA
SWA
HDRVA
BOOTA
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
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