MB39A119 Datasheet, PDF (8/53 Pages) Fujitsu Component Limited. – DC/DC Converter IC of Synchronous Rectification for charging Li-ion battery

MB39A119
■ ELECTRICAL CHARACTERISTICS
(VCC = 19 V, VB = 0 mA, VREF = 0 mA, Ta = +25 °C)
Parameter
Symbol Pin No.
Conditions
Value
Unit
Min Typ Max
Reference
voltage
block
[REF]
Output voltage
Input stability
Load stability
Short-circuit
output current
VREF1
VREF2
Line
Load
Ios
19 Ta = +25 °C
4.963 5.000 5.037 V
19 Ta = −10 °C to + 85 °C 4.95 5.00 5.05 V
19 VCC = 8 V to 25 V
⎯
1
10 mV
19 VREF = 0 mA to −1 mA ⎯
1
10 mV
19 VREF = 1 V
−60 −30 −15 mA
Threshold voltage
VTLH
VTHL
1 VCC
1 VCC
⎯
7.5 7.9 V
7.0
7.4
⎯
V
Under
Hysteresis width
VH
voltage
VTLH
lockout
Threshold voltage
protection
VTHL
circuit block ^{Hysteresis width}
VH
[UVLO]
Threshold voltage
VTLH
VTHL
1 VCC
25 VB
25 VB
25 VB
19 VREF
19 VREF
⎯
0.1
⎯
V
3.8 4.0 4.2 V
3.1 3.3 3.5 V
⎯
0.7
⎯
V
2.5 2.7 2.9 V
2.3 2.5 2.7 V
Hysteresis width
VH
19 VREF
⎯
0.2
⎯
V
Soft-start
block
Charge current
ICs
17
[SOFT]
⎯
−14 −10 −6 µA
Triangular
wave
oscillator
block
[OSC]
Oscillation
frequency
Frequency
temperature
stability
fosc
∆f/fdt
27 RT = 39 kΩ
450 500 550 kHz
27 Ta = −30 °C to + 85 °C ⎯
1*
⎯%
Input offset
voltage
VIO
7, 8
⎯
⎯
1
5 mV
Input bias current
IB
7, 8
⎯
−50 −15 ⎯ nA
Error
amplifier
block
[Error
Amp1]
Voltage gain
Frequency
bandwidth
Output voltage
AV
BW
VFBH
VFBL
7, 8, 14 DC
7, 8, 14 AV = 0 dB
14
⎯
14
⎯
⎯ 100* ⎯ dB
⎯ 1.2* ⎯ MHz
2.9
3.1
⎯
V
⎯
0.8 0.9 V
Output source
current
ISOURCE
14 FB123 = 2 V
⎯ −60 −30 µA
Output sink
current
ISINK
14 FB123 = 2 V
2.0
4.0
⎯ mA
* : Standard design value
(Continued)
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