Product Info

VTech proprietary and confidential
VTech Communications LTD.
R&D Department
The document is VTech’s proprietary information, Please do not disclose to third party without VTech’s consent
Ref. No.: 20191009 Version: 01 Date: 09 Oct, 2019 Page 28 of 33
10.3 Input/Output terminal characteristic
For all I/O terminal characteristics:
• Current drawn into a pin is defined as positive.
• Current supplied out of a pin is defined as negative.
10.3.1 LED driver pads
LED driver pads
Min
Typ
Max
Unit
Current, IPAD
High impedance state
–
–
5
µA
Current sink state
–
–
10
mA
LED pad voltage, VPAD
IPAD = 10 mA
–
–
0.55
V
VOL output logic level low
–
0
–
V
VOH output logic level high
–
0.8
–
V
VIL input logic level low
–
0
–
V
VIH input logic level high
–
0.8
–
V
NOTE LED output port is open-drain and requires a pull-up
10.4 Battery charger
Battery charger
Min
Typ
Max
Unit
Input voltage, VCHG, 4.20 V float setting
4.75/3.10
5.00
6.50
V
Input voltage, VCHG, 4.35 V float setting
4.90/3.10
5.00
6.,50
V
NOTE Reduced specification if VCHG - VBAT < 0.55 V. Full specification > 4.75 V.
Reduced specification if VCHG - VBAT < 0.55 V. Full specification > 4.90 V.
Trickle charge mode
Min
Typ
Max
Unit
Charge current Itrickle, as percentage of fast charge current
8
10
12
%
Vfast rising threshold
-
2.9
-
V