MB39A125 Datasheet, PDF (15/64 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging Li-ion Battery

MB39A125/126
■ ELECTRICAL CHARACTERISTICS
(VCC = 19 V, VREF = 0 mA, Ta = +25 °C)
Parameter
Sym- Pin
bol No.
Condition
Value
Unit Remarks
Min Typ Max
VREF1 6 Ta = +25 °C
4.963 5.000 5.037 V MB39A125
1.
Reference
voltage block
[REF]
VREF2
Output voltage
VREF1
VREF2
Input stability Line
Load stability Load
6 Ta = −10 °C to +85 °C 4.95 5.000 5.05 V MB39A125
6 Ta = +25 °C
4.943 4.980 5.017 V MB39A126
6 Ta = −10 °C to +85 °C 4.930 4.980 5.030 V MB39A126
6 VCC = 8 V to 25 V
⎯ 3 10 mV
6 VREF = 0 mA to −1 mA ⎯ 1 10 mV
Output current
at short circuit
Ios
6 VREF = 1 V
−50 −25 −12 mA
2.
Threshold
Under voltage _voltage
lockout
protection
circuit block
[UVLO]
Hysteresis
width
VTLH
VTHL
6 VREF =
6 VREF =
VH
6
⎯
2.6 2.8 3.0 V
2.4 2.6 2.8 V
⎯ 0.2* ⎯ V
3.
Soft start block
[SOFT]
Charge
current
ICS 22
⎯
−14 −10 −6 µA
Oscillation
4.
frequency
Triangular
wave oscillator ^Frequency
block [OSC] ^temperature
stability
fOSC 20 RT = 47 kΩ
270 300 330 kHz
∆f/fdt 20 Ta = −30 °C to +85 °C ⎯ 1* ⎯ %
Input offset
voltage
VIO
3, 4,
8, 9
FB123 = 2 V
⎯1
5 mV
Input bias
current
IB
3, 4,
8, 9
⎯
−100 −30 ⎯ nA
Common
mode input
5-1.
voltage range
Error amplifier Voltage gain
block
[Error Amp1,
Error Amp2]
Frequency
bandwidth
Output voltage
VCM
Av
BW
VFBH
VFBL
3, 4,
8, 9
⎯
15 DC
15 AV = 0 dB
15
⎯
15
⎯
0⎯5V
⎯ 100* ⎯ dB
⎯ 1.3* ⎯ MHz
4.8 5.0 ⎯ V
⎯ 0.8 0.9 V
Output source
current
ISOURCE
15
FB123 = 2 V
⎯ −120 −60 µA
Output sink
current
ISINK 15 FB123 = 2 V
2.0 4.0 ⎯ mA
* : Standard design value
(Continued)
15