User's Manual
Table Of Contents
- Version History
- Contents
- Table Index
- Figure Index
- 1Introduction
- 2 Package Information
- 3 Interface Application
- 4 RF Specifications
- 5 Electrical Specification
- 6 SMT Production Guide
- 7 Packaging
- 8 Appendix
SIM7600G User manual
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3.15 Other interface
3.15.1 Sink Current Source
The ISINK pin is VBAT tolerant and intended to drive some passive devices, such as LCD backlight and
white LED, etc. Its output current can be up to 40mA and be set by the AT command “AT+ CLEDITST”.
Table 21: Sink current electronic characteristic
Symbol
Description
Min.
Typ.
Max.
Unit
V
ISINK
Voltage tolerant
0.5
-
VBAT
V
I
ISINK
Current tolerant
0
-
40
mA
ISINK is a ground-referenced current sink. The following figure shows its reference circuit.
Figure 34: ISINK reference circuit
The sinking current can be adjusted to meet the design requirement through the AT command “AT+
CLEDITST =<0>, <value>”.The “value” ranges from 0 to 8, on behalf of the current from 0mA to 40mA
by 5mA step.
NOTE