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 29 of 33
Vfast rising threshold trim step size
-
0.1
-
V
Vfast falling threshold
-
2.8
-
V
Fast charge mode
Min
Typ
Max
Unit
Charge current during constant
current mode, Ifast
Maximum charge setting
(VCHG - VBAT > 0.55 V)
194
200
206
mA
Minimum charge setting
(VCHG - VBAT > 0.55 V)
-
10
-
mA
Reduced headroom charge current,
as a percentage of Ifast
(VCHG - VBAT < 0.55 V)
50-
-
100
%
Charge current step size
-
10
-
mA
Vfloat threshold, 4.20 V
4.16
4.20
4.24
V
Vfloat threshold, 4.35 V
4.31
4.35
4.39
V
Charge termination current Iterm, as percentage of Ifast
7
10
20
%
Standby mode
Min
Typ
Max
Unit
Voltage hysteresis on VBAT, Vhyst
100
–
150
mV
Error charge mode
Min
Typ
Max
Unit
Headroom error falling threshold
–
50
–
mV
NOTE Headroom = VCHG – VBAT
External charge mode
Min
Typ
Max
Unit
Fast charge current, Ifast
200
–
500
mA
Control current into CHG_EXT
0
–
20
mA