ams Datasheet Page 7
[v2-23] 2016-Mar-30 Document Feedback
AS3685A/AS3685B − Electrical Characteristics
All limits are guaranteed. The parameters with minimum and
maximum values are guaranteed with production tests or SQC
(Statistical Quality Control) methods.
Figure 8:
Operating Conditions
Figure 9:
Charge Pump Characteristics
Symbol Parameter Min Typ Max Units Note
VBAT Battery Supply Voltage 3.0 3.6 5.5 V Supply voltage range
VBATFUNC
Battery Supply Voltage
(functionally working)
2.6 V
AS3685 functionally working, but
not all parameters fulfilled
I
BAT
Operating Current
0.4 A
Depending on load current and
charge pump mode
2.0 A Limited lifetime, max 20,000s
T
AMB
Ambient Temperature -30 25 85 °C
I
OFF
Off Mode Current 1.0 4.0 μA EN1 = 0, EN2 = 0; VBAT ≤ 4.2V
I
OPERATING
Power Consumption
(without load)
0.85 mA 1:1 Mode
6.6 mA 1:1.5 Mode
8.1 mA 1:2 Mode
Symbol Parameter Min Typ Max Units Note
V
CPOUT
V(VCP) Output
Voltage (without load
– do not short to VSS)
V
BAT
x
CP-
mode
V
CP-mode is 1, 1.5 or 2
(automatically selected)
Output Limitation 5.4 5.6 Internally limited
R
CP
Charge Pump
Effective Resistance
0.28 0.53 Ω
1:1 Mode
V
BAT
= 3.6V, I
CPOUT
= 200mA
1.37 2.00 Ω
1:1.5 Mode
V
BAT
= 3.3V, I
CPOUT
= 500mA,
T
JUNCTION
≤ 85°C
1.95 2.44 Ω
1:2 Mode
V
BAT
= 3.0V, I
CPOUT
=700mA,
T
JUNCTION
≤ 85°C
Eta Efficiency 75 93 %
Vin=3.0V-4.5V, Iout=100mA
(charge pump alone)
V
RIPPLE
Output Ripple
Voltage
100 mVpp Vin=3.0-4.5V, Iout=350mA,
Electrical Characteristics
