MC34710 Datasheet, PDF (3/18 Pages) Motorola, Inc – Adjustable Dual Output Switching Power Supply

PIN CONNECTIONS
PIN CONNECTIONS
RST
1
MODE0
2
MODE1
3
MODE2
4
N/C
5
N/C
6
N/C
7
N/C
8
N/C
9
N/C
10
N/C
11
N/C
12
GND
13
N/C
14
N/C
15
N/C
16
32
CT
31
CP1
30
CP2
29
VB
28
B+
27
VSWITCH
26
VFB
25
LINB+
24
N/C
23
VCORE
22
N/C
21
N/C
20
N/C
19
N/C
18
N/C
17
N/C
Table 1. 34710 Pin Definitions
Pin
Number
1
2
3
4
5 – 12,
14 –22, 24
13
Pin Name
RST
Mode0
Mode1
Mode2
NC
GND
Pin Function
Reset
Input
NC
Ground
23
VCORE
Output
25
LINB+
Input
26
VFB
Input
27
VSWITCH
Output
28
B+
Input
29
VB
Output
30
CP2
Passive
Component
31
CP1
Passive
Component
32
CT
Passive
Component
Figure 3. 34710 Pin Connections
Formal Name
Reset
Mode Control
Definition
Reset is an open drain output only.
These input pins control V_FB and V_CORE output voltages.
No Connects _{No internal connection to this pin.}
Ground
Ground.
Core Voltage Core regulator output voltage.
Regulator Output
Core Voltage _{Core regulator input voltage.}
Regulator Input
V_I/O Switching
Regulator
Feedback
Feedback pin for V_I/O switching regulator and internal logic supply.
V_I/O Switching
Regulator Switch
Output
V_I/O switching regulator switching output.
Power Supply
Input
Regulator input voltage.
Boost Voltage Boost voltage storage node.
CP Capacitor
Positive
Charge pump capacitor connection 2.
CP Capacitor
Negative
Charge pump capacitor connection 1.
Reset Delay
Capacitor
Reset delay adjustment capacitor.
Analog Integrated Circuit Device Data
Freescale Semiconductor
34710
3