PIN CONNECTIONS
PIN CONNECTIONS
26 25 24 23 22 21 20 19
BOOT1 1
18 BOOT2
PVIN1
PVIN1
SW1
SW1
PGND1
PGND1
2
3
4
Transparent
Top View
PIN 27
17
16
15
PVIN2
PVIN2
SW2
SW2
PGND2
PGND2
VOUT1
5
1 4 VOUT2
6
7
8
9
10
11 12 13
Figure 3. 34716 Pin Connections
Table 1. 34716 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 12 .
Pin Number
1
2
3
4
5
Pin Name
BOOT1
PVIN1
SW1
PGND1
VOUT1
Pin Function
Passive
Supply
Output
Ground
Output
Formal Name
Bootstrap
Power Input Voltage
Switching Node
Power Ground
Output Voltage
Definition
Channel 1 Bootstrap capacitor input pin
Channel 1 Buck converter power input
Channel 1 Buck converter switching node
Channel 1 Buck converter and discharge MOSFETs power ground
Channel 1 Buck converter output voltage discharge pin
Discharge Path
6
INV1
Input
Error Amplifier
Channel 1 Buck converter error amplifier inverting input
Inverting Input
7
COMP1
Input
Buck Convertor
Channel 1 Buck converter external compensation network input
Compensation Input
8
VREFIN
Input
Reference Voltage
Voltage tracking reference voltage input
Input
9
VREFOUT
Output
Reference Voltage
This is a buffered reference voltage output
Output
10
PG
Output
Power Good Output
It is an active low open drain power good status reporting output
Signal
11
12
SD
COMP2
Input
Input
Shutdown Input
Buck Convertor
Shutdown mode input control pin
Channel 2 Buck converter external compensation network input
Compensation Input
13
INV2
Input
Error Amplifier
Channel 2 Buck converter error amplifier inverting input
Inverting Input
34716
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
3
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