MB3888 Datasheet, PDF (8/30 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging Li-ion Battery

MB3888
s ELECTRICAL CHARACTERISTICS
(Ta = +25 °C, VCC = 19 V, VCC (O) = 19 V, VREF = 0 mA)
Parameter
Sym- Pin
bol No.
Conditions
Rating
Unit
Min
Typ
Max
1.
Reference
voltage
block
[REF]
Output voltage
Input stability
Load stability
Short-circuit
output current
VREF
Line
Load
Ios
Ta = +25 °C
4
Ta = −10 °C to +85 °C
4 VCC = 8 V to 25 V
4 VREF = 0 mA to −1 mA
4 VREF = 1 V
4.975
4.963


−50
5.000
5.000
3
1
−25
5.025 V
5.037 V
10 mV
10 mV
−12 mA
2.
Under
voltage
lockout
protection
circuit block
[UVLO]
Threshold
voltage
Hysteresis width
Threshold
voltage
VTLH
16
VCC = VCC (O) ,
VCC =
VTHL
16
VCC = VCC (O) ,
VCC =
VH 16 VCC = VCC (O)
VTLH 4 VREF =
VTHL 4 VREF =
6.2
6.4
6.6
V
5.2
5.4
5.6
V

1.0*

V
2.6
2.8
3.0
V
2.4
2.6
2.8
V
Hysteresis width
VH
4


0.2*

V
3.
Soft-start
block
Charge current
ICS
20

[SOFT]
−14
−10
−6
µA
4.
Triangular
waveform
oscillator
block
[OSC]
Oscillation
frequency
Frequency
temperature
stability
fOSC 18 RT = 43 kΩ
260
290
320 kHz
∆f/fdt 18 Ta = −30 °C to +85 °C

1*

%
* : Standard design value.
(Continued)
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