FAN5009 Fairchild Semiconductor, FAN5009 Datasheet - Page 2

• Manufacturer Part Number: FAN5009
• Description: Dual Bootstrapped 12V MOSFET Driver
• Manufacturer: Fairchild Semiconductor

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FAN5009
Pin Configuration
Pin Definitions
Functional Block Diagram
2
Pin # Pin Name Pin Function Description
1
2
3
4
5
6
7
8
PGND
BOOT
HDRV
LDRV
PWM
VCC
SW
OD
BOOT
PWM
FAN5009M 8-pin SO-8 package
VCC
OD
PWM
OD
Bootstrap Supply Input. Provides voltage supply to high-side MOSFET driver. Connect to
bootstrap capacitor. See Applications Section.
PWM Signal Input. This pin accepts a logic-level PWM signal from the controller.
Output Disable. When low, this pin disables FET switching (HDRV and LDRV are held low).
Power Input . +12V chip bias power. Bypass with a 1µF ceramic capacitor.
Low Side Gate Drive Output. Connect to the gate of low-side power MOSFET(s).
Power ground. Connect directly to source of low-side MOSFET(s).
Switch Node Input . Connect as shown in Figure 1. SW provides return for high-side
bootstrapped driver and acts as a sense point for the adaptive shoot-thru protection.
High Side Gate Drive Output – Connect to the gate of high-side power MOSFET(s).
1
2
3
4
FAN5009
2
3
8
7
6
5
HDRV
SW
PGND
LDRV
(Paddle should be connected to ground or left floating)
2.2
FAN5009MP 8-pin MLP package
BOOT
PWM
VCC
VCC
OD
+
1.2
1
2
3
4
1.2
FAN5009
(Ground)
Paddle
8
7
6
5
HDRV
SW
PGND
LDRV
4
1
8
7
5
6
PRODUCT SPECIFICATION
VCC
BOOT
HDRV
SW
LDRV
PGND
REV. 1.0.5 7/22/04