RT9907GQV RICHTEK [Richtek Technology Corporation], RT9907GQV Datasheet - Page 5

• Manufacturer Part Number: RT9907GQV
• Description: 3 Channel DC/DC Converters IC with High-Efficiency Step-Up and Step-Down
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Functional Pin Description
DS9907-07 August 2007
Exposed Pad (25) GND
Pin No.
7, 23
10
11
12
13
14
15
16
17
18
19
20
21
22
24
1
2
3
4
5
6
8
9
COMP3
VDD3
LX3
PGND3
SS
RT
GND
VDDM
FB1
COMP1
PGND1
VDD1
LX1
PGND2
LX2
VDD2
ENM
EN1
COMP2
FB2
EN2
EN3
FB3
Pin Name
CH3 Feedback Compensation Pin.
CH3 Power Input Pin.
CH3 Switch Node. Drains of the internal P-MOSFET and N-MOSFET switches.
Connect an inductor to LX3 pins together as close as possible.
Power Ground for CH3.
Sets the Soft Start interval of the converter. Connect a capacitor from this pin to
ground.
Frequency setting resistor connection pin. Frequency is 500kHz if RT pin not
connected
Analog Ground.
Device Input Power Pin.
CH1 Feedback Input Pin.
CH1 Feedback Compensation Pin.
Power Ground for CH1
CH1 Power Input Pin. Connect output of Boost to this pin.
CH1 Switch Vode. Connect an inductor to LX1 Pins together as close as possible.
Power Ground for CH2.
CH2 Switch Node. Drains of the internal P-Channel and N-MOSFET switches.
Connect an inductor to LX2 pins together as close as possible.
CH2 Power Input Pin.
Whole Device Control Pin. Tie this pin higher than 1.3V to enable the device. Tie
below 0.4V to turn off the device.
CH1 Enable Input. Tie this pin higher than 1.3V to enable CH1. Tie below 0.4V to
turn off the CH1.
CH2 Feedback Compensation Pin.
CH2 Feedback Input.
CH2 Enable Input. Tie this pin higher than 1.3V to enable CH2. Tie below 0.4V to
turn off the CH2.
CH3 Enable Input. Tie this pin higher than 1.3V to enable CH3. Tie below 0.4V to
turn off the CH3.
CH3 Feedback Input.
The exposed pad must be soldered to a large PCB and connected to GND for
maximum power dissipation.
Preliminary
Pin Function
RT9907
www.richtek.com
5