MB39C308 Datasheet, PDF (16/60 Pages) Fujitsu Component Limited. – 6ch DC/DC Converter IC for LPIA Platform VR

MB39C308
Parameter
Vo3 output over
voltage threshold
CH3 block
[CH3]
Vo3 over current limit
FB3 input resistance
Soft start time
CH4 output voltage
High-side FET
on-resistance
Low-side FET
on-resistance
PVDD4 standby
current
CH4 block
[CH4]
CH4 efficiency
Vo4 output over
voltage threshold
(Ta = + 25 °C, AVDD = PVDD1 to PVDD7 = 7.2 V)
Symbol
Condition
Value
Unit
Min Typ Max
VOVP3
VSEL34 pin = “H” Level,
Vo3 = 1.8 V, FB3 pin
VSEL34 pin = “L” Level,
Vo3 = 1.5 V, FB3 pin
2.124*¹ 2.16*¹ 2.196*¹ V
1.77*¹ 1.8*¹ 1.83*¹ V
IOCP3
Io3,
L = 1.5 μH
3.0*¹ 3.75*¹ 4.5*¹ A
RFB3 FB3 pin
⎯
250
⎯ kΩ
SS3
FB3 pin
SS1 = SS2 = AGND pin
1.19 1.4 1.61 ms
VSEL34 pin = “H” Level,
FB4 pin
Vo4
VSEL34 pin = “L” Level,
FB4 pin
0.855 0.9 0.945 V
0.7125 0.75 0.7875 V
RONH4
LX4 pin = −100 mA,
VGS = 5 V
⎯ 130*¹ ⎯ mΩ
RONL4
LX4 pin = 100 mA,
VGS = 5 V
⎯
55*¹
⎯ mΩ
IPVDD4S
CTL34 pin = 0 V,
PVDD4 pin = 12.6 V
⎯
⎯
15 μA
ηT41
VSEL34 pin = “H” Level,
FSEL4 pin =“H” Level,
Vo4 = 0.9 V
0.3 × Io (Max) < Io <
0.6 × Io (Max)
80*³
⎯
⎯
%
ηT42
VSEL34 pin = “L” Level,
FSEL4 pin =“H” Level,
Vo4 = 0.75 V
0.3 × Io (Max) < Io <
0.6 × Io (Max)
80*³
⎯
⎯
%
VSEL34 pin = “H” Level,
ηF41
FSEL4 pin =“H” Level,
Vo4 = 0.9 V
83*³
⎯
0.6 × Io (Max) < Io < Io (Max)
⎯
%
VSEL34 pin = “L” Level,
ηF42
FSEL4 pin =“H” Level,
Vo4 = 0.75 V
83*³
⎯
0.6 × Io (Max) < Io < Io (Max)
⎯
%
VOVP4
VSEL34 pin = “H” Level,
Vo4 = 0.9 V, FB4 pin
VSEL34 pin = “L” Level,
Vo4 = 0.75 V, FB4 pin
1.035*¹ 1.08*¹ 1.125*¹ V
0.862*¹ 0.90*¹ 0.938*¹ V
(Continued)
16
DS04-27261-6E