PIN CONNECTIONS
Table 1. 34717 Pin Definitions (continued)
A functional description of each pin can be found in the Functional Pin Description section beginning on
page 11.
Pin Number
14
15
16
17
18
19
20
21
22,23
24
25
Pin Name
VOUT2
PGND2
SW2
PVIN2
BOOT2
ILIM1
ILIM2
FREQ
VIN
Pin Function
Output
Ground
Input/Output
Power
Input
Input
Input
Input
Power
Ground
Output
Formal Name
Output Voltage
Discharge Path
Power Ground
Switching Node
Power Input Voltage
Bootstrap Input
Soft Start Adjustment
Input CH 1
Soft Start Adjustment
Input CH 2
Frequency Adjustment
Input
Input Supply Voltage
Signal Ground
Internal Supply
Voltage
Definition
Channel 2 Buck converter output voltage discharge pin
Channel 2 Buck converter and discharge MOSFETs power ground
Channel 2 Buck converter switching node
Channel 2 Buck converter power input
Channel 2 Bootstrap capacitor input pin
Channel 1 soft start adjustment
Channel 2 soft start adjustment
The buck converters switching frequency adjustment input
Power supply voltage of the IC
Analog ground of the IC
Internal Supply Voltage Output
GND
VDDI
34717
4
Analog Integrated Circuit Device Data
Freescale Semiconductor
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
