Texas Instruments LM34904EVM Evaluation Module LM34904EVM/NOPB LM34904EVM/NOPB Datenbogen
Produktcode
LM34904EVM/NOPB
ENABLE
ACC_PWR
GND
VCC
POK
ACC_DET
A1
B1
C1
A2
B2
C2
L
M
3
4
9
0
2
/4
CPU
Accessory
200k
Accessory
Detect
VCC: 2.8V to 5.3V
200k
Evaluation Module Operation
Figure 1. Typical System Schematic
Table 1. Power Switch Truth Table
Input
(1)
Output
Current Limit
T
J
Limit
PFET Switch
ENABLE
ACC_DET
2.8V < VCC < 5.3V
POK
Detected
Exceeded
Status
0
x
No
No
Yes
Open
Open Drain
x
1
No
No
Yes
Open
Open Drain
0 to 1
0
No
No
Yes
On
Grounded
0 to 1
0
Yes
No
Yes
Current
Grounded
Limited
x
x
x
Yes
2.2V < VCC < 5.3V
Open
Open Drain
0
x
x
No
2.2V < VCC < 2.8V
Open
Open Drain
(1)
x = stands for "don't care".
2
AN-2266 LM34902/4 Current Limited Power Switch Evaluation Module
SNVU156A – July 2012 – Revised May 2013
Copyright © 2012–2013, Texas Instruments Incorporated