3
L9001 pin connection and description
Figure 3.
L9001 pins connection diagram (top view)
CP
VS
V1O
WAKE
CONF3
RSTN2
VDDIO
RSTN1
ADCMON
WDT
STBY
WDI
VADC
TWN
CONF2
CONF1
VR2
FB2
10
8
9
7
6
5
4
3
2
17
18
19
20
21
23
22
24
16
1
15
GND
WDO
CP1
CP2
VR1
V2O
11
12
14
13
GADG3103170817PS
Table 1.
L9001 pin description
Pin Number
Pin Name
Description
Class
I/O Type
EP
GND
Exposed pad: connected to GND
Supply
Global
1
GND
Power GND
Supply
Global
2
ADCMON
ADCLDO monitor (reset)
O
Local
3
RSTN1
VDD1 monitor (reset)
O
Local
4
RSTN2
VDD2 monitor (reset)
O
Local
5
VDDIO
Input voltage reference
Supply
Local
6
CONF3
Configuration input 3
I
Local
7
WAKE
Wake-up input
I
Local
8
V1O
VDD1 switching pin
Supply
Local
9
VS
Battery supply voltage
Supply
Global
10
CP
Charge pump output
Supply
Local
11
CP2
Charge pump capacitor pin 2
Supply
Local
12
CP1
Charge pump capacitor pin 1
Supply
Local
13
V2O
BUCK2 switching pin/LDO2 output voltage
Supply
Local
14
VR1
VDD1 BYP output voltage /VDD2 supply pin
Supply
Global
15
FB2
VDD2 feedback voltage pin
I
Local
16
VR2
VDD2 BYP output voltage
Supply
Local
17
CONF1
Configuration input 1
I
Local
18
CONF2
Configuration input 2
I
Local
19
VADC
ADCLDO output voltage
Supply
Global
20
TWN
Thermal warning output flag
O
Local
21
WDI
Watchdog input
I
Local
22
STBY
Stand-by input
I
Local
23
WDT
Watchdog timer input
I/O
Local
24
WDO
Watchdog error flag output
O
Local
UM2598
L9001 pin connection and description
UM2598
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Rev 1
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