FAN5091MTC Fairchild Semiconductor, FAN5091MTC Datasheet - Page 2

• Manufacturer Part Number: FAN5091MTC
• Description: IC CTRLR DC-DC SYNC 2PH 24TSSOP
• Manufacturer: Fairchild Semiconductor

Specifications of FAN5091MTC

• Applications: Controller, Intel Pentium® IV
• Voltage - Input: 5V
• Number Of Outputs: 1
• Voltage - Output: 1.1 ~ 1.85 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Output Voltage: 13.2 V
• Mounting Style: SMD/SMT
• Operating Temperature Range: 0 C to + 70 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FAN5091
Pin Assignments
Pin Definitions
2
Pin Number
1-5
10
11
12
13
14
15
16
17
18
19
6
7
8
9
Pin Name
VID0-4
BYPASS
AGND
LDRVB
PGNDB
SWB
HDRVB
BOOTB
BOOTA
HDRVA
SWA
PGNDA
LDRVA
VCC
PWRGD
BYPASS
BOOTB
PGNDB
HDRVB
LDRVB
Pin Function Description
Voltage Identification Code Inputs. These open collector/TTL compatible
inputs will program the output voltage over the ranges specified in Table 1.
Pull-ups are internal to the controller.
5V Rail. Bypass this pin with a 1 F ceramic capacitor to 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.
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 " .
Power Ground B. Return pin for high currents flowing in low-side MOSFET.
Connect directly to low-side MOSFET source.
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.
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 " .
Bootstrap B. Input supply for high-side MOSFET.
Bootstrap A. Input supply for high-side MOSFET.
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 " .
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.
Power Ground A. Return pin for high currents flowing in low-side MOSFET.
Connect directly to low-side MOSFET source.
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 " .
VCC. Internal IC supply. Connect to system 12V supply, and decouple with a
0.1 F ceramic capacitor.
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.
AGND
VID0
VID1
VID2
VID3
VID4
SWB
1
2
3
4
5
6
7
8
9
10
11
12
FAN5091
24
23
22
21
20
19
18
17
16
15
14
13
VFB
RT
ENABLE/SS
DROOP/E*
ILIM
PWRGD
VCC
LDRVA
PGNDA
SWA
HDRVA
BOOTA
PRODUCT SPECIFICATION
REV. 1.0.0 5/10/01