MB3828 Fujitsu Microelectronics, Inc., MB3828 Datasheet - Page 9

• Manufacturer Part Number: MB3828
• Description: Pentium DC/DC Converter ic
• Manufacturer: Fujitsu Microelectronics, Inc.

PWM comparator
blocks (PWM
Comp.1, 2)
Dead time control
block (DTC)
Output blocks
(Drive1, 2)
Control block
(CTL)
PWRGOOD
comparator
protection block
(PWRGD)
Discharge control
comparator (CS
Comp.)
Discharge control
ON/OFF block
(CTL LOGIC)
Parameter
Threshold voltage
Maximum duty cycle Dtr
Output voltage
(main side)
Output voltage
(synchronized
rectifier side)
Diode voltage
CTL input voltage
Input current
Threshold voltage
Hysteresis voltage
Output leak current
Output voltage
Threshold voltage
ENB input voltage
Input current
V
V
V
V
V
V
V
V
V
I
V
V
V
I
V
V
V
V
I
Symbol
CTL
LEAK
ENB
TL
TH
OH
OL
OH
OL
DIODE
IH
IL
TLOW
THIGH
H
OL
TH
IH
IL
8, 11 Duty cycle = 0%
8, 11 Duty cycle = Dtr
Pin
no.
11
11
13
24
24
19
21
21
21
21
21
24
24
24
8
8
8
7
R
OUT1 = –30 mA,
VB = 5 V, CB = 20 V,
VS = 15 V
OUT1 = 30 mA,
VB = 5 V, CB = 22 V,
VS = 15 V
OUT2 = –30 mA,
VB = 5 V
OUT2 = 30 mA,
VB = 5 V
I
IC operating mode
IC standby mode
CTL = 5 V
VD4 to VD0 setting,
VSENSE =
VD4 to VD0 setting,
VSENSE =
PWRGOOD = 5 V
PWRGOOD = 1 mA
CS =
Discharge control ON
Discharge control
OFF
ENB = 0 V
DIODE
T
= 130 k
Condition
= 10 mA
—
CB – 1.4 CB – 1.1
0.88
1.08
VB – 1.4 VB – 1.1
Min.
–1.0
2.0
2.0
1.2
VD
VD
85
—
—
—
—
—
—
—
—
0
3
0
(Ta = +25 C, V
VS + 1.1 VS + 1.4
0.90
1.10
Value
–0.05
Typ.
1.86
0.06
0.05
100
1.3
0.1
1.0
VD
VD
90
30
—
—
—
—
—
MB3828
0.92
1.12
Max.
0.07
160
2.0
0.5
1.1
1.0
0.4
1.0
18
VD
VD
40
—
95
—
—
50
18
—
(Continued)
CC
= 5 V)
Unit
mV
%
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
A
A
A
9