MB3828 Datasheet, PDF (9/26 Pages) Fujitsu Component Limited. – Pentium DC/DC Converter IC

MB3828
Parameter
Symbol
Pin
no.
Condition
(Ta = +25°C, VCC = 5 V)
Value
Unit
Min. Typ. Max.
PWM comparator
VTL
blocks (PWM
Threshold voltage
Comp.1, 2)
VTH
Dead time control
block (DTC)
Maximum duty cycle
Dtr
8, 11 Duty cycle = 0%
8, 11 Duty cycle = Dtr
8 RT = 130 kΩ
1.2 1.3 — V
— 1.86 2.0 V
85 90 95 %
VOH
Output voltage
(main side)
VOL
Output blocks
(Drive1, 2)
Output voltage
VOH
(synchronized
rectifier side)
VOL
Control block
(CTL)
Diode voltage
CTL input voltage
Input current
VDIODE
VIH
VIL
ICTL
PWRGOOD
comparator
protection block
(PWRGD)
Threshold voltage
Hysteresis voltage
Output leak current
Output voltage
Discharge control
comparator (CS Threshold voltage
Comp.)
VTLOW
VTHIGH
VH
ILEAK
VOL
VTH
OUT1 = –30 mA,
8 VB = 5 V, CB = 20 V, CB – 1.4 CB – 1.1 —
V
VS = 15 V
OUT1 = 30 mA,
8 VB = 5 V, CB = 22 V,
VS = 15 V
— VS + 1.1 VS + 1.4 V
11
OUT2 = –30 mA,
VB = 5 V
VB – 1.4 VB – 1.1 —
V
11
OUT2 = 30 mA,
VB = 5 V
— 0.1 0.5 V
13 IDIODE = 10 mA
— 1.0 1.1 V
24 IC operating mode
2.0 — 18 V
24 IC standby mode
0
— 1.0 V
19 CTL = 5 V
— 100 160 µA
21
VD4 to VD0 setting,
VSENSE =
0.88 0.90 0.92
× VD × VD × VD
V
21
VD4 to VD0 setting,
VSENSE =
1.08 1.10 1.12
× VD × VD × VD
V
21
—
3 30 50 mV
21 PWRGOOD = 5 V
— — 40 µA
21 PWRGOOD = 1 mA — 0.06 0.4 V
24 CS =
— 0.05 0.07 V
VIH
Discharge control _{ENB input voltage}
ON/OFF block
VIL
(CTL LOGIC)
Input current
IENB
24 Discharge control ON 2.0 — 18 V
24
Discharge control
OFF
0
— 1.0 V
7 ENB = 0 V
–1.0 –0.05 — µA
(Continued)
9