MB39A123 Datasheet, PDF (9/44 Pages) Fujitsu Component Limited. – 6 ch DC/DC Converter IC with Synchronous Rectification

MB39A123
■ ELECTRICAL CHARACTERISTICS
(VCC = VCCO = 4 V, Ta = +25 °C)
Parameter
Symbol Pin No.
Conditions
Value
Unit
Min Typ Max
VREF1
9
VREF = 0 mA
1.98 2.00 2.02 V
Output voltage VREF2
9
VCC = 2.5 V to 11 V
1.975 2.000 2.025 V
VREF3
9 VREF = 0 mA to −1 mA 1.975 2.000 2.025 V
Reference
Voltage Block
[VREF]
Input stability
Load stability
Temperature
stability
Line
Load
∆VREF/
VREF
9
VCC = 2.5 V to 11 V*
9
VREF = 0 mA to −1 mA*
9
Ta = 0 °C to +85 °C*
⎯
2
⎯ mV
⎯
2
⎯ mV
⎯ 0.20 ⎯ %
Short-circuit
output current
IOS
9
VREF = 0 V*
⎯ −130 ⎯ mA
Under voltage Threshold
lockout
voltage
VTH1
35
VCC =
protection
circuit Block
Hysteresis
width
VH1
35
⎯
(ch.1 to ch.4)
[UVLO1]
Reset voltage VRST1
35
VCC =
1.7 1.8 1.9 V
0.05 0.1 0.2 V
1.55 1.7 1.85 V
Under voltage Threshold
lockout
voltage
VTH2
30
VCC =
protection
circuit Block
Hysteresis
width
VH2
30
⎯
(ch.5, ch.6)
[UVLO2]
Reset voltage VRST2
30
VCC =
1.35 1.5 1.65 V
0.02 0.05 0.1 V
1.27 1.45 1.63 V
Short-circuit
Threshold
voltage
VTH
13
detection Block
[SCP]
Input source
current
ICSCP
13
⎯
0.65 0.70 0.75 V
⎯
−1.4 −1.0 −0.6 µA
Triangular
Wave Oscilla-
tor Block
[OSC]
Oscillation
frequency
Frequency
Input stability
Frequency
temperature
stability
fosc1
fosc2
∆fOSC/
fOSC
29 to 35
CT = 100 pF,
RT = 6.8 kΩ
29 to 35
CT = 100 pF, RT = 6.8 kΩ
VCC = 2.5 V to 11 V
29 to 35
CT = 100 pF, RT = 6.8 kΩ
VCC = 2.5 V to 11 V*
∆fOSC/
fOSC
29 to 35
CT = 100 pF, RT = 6.8 kΩ
Ta = 0 °C to +85 °C*
0.95 1.0 1.05 MHz
0.945 1.0 1.055 MHz
⎯ 1.0 ⎯ %
⎯ 1.0 ⎯ %
Soft-Start Block
(ch.1 to ch.6)
[CS1 to CS6]
Charge
current
ICS
17,20,27,
39,40,47
CS1 to CS6 = 0 V
−1.45 −1.1 −0.75 µA
(Continued)
9