US3018
ABSOLUTE MAXIMUM RATINGS
V5 supply Voltage ........................................... 7V
V12 Supply Voltage ............................................ 20V
Storage Temperature Range ................................. -65 TO 150°C
Operating Junction Temperature Range .......... 0 TO 125°C
PACKAGE INFORMATION
24 PIN WIDE BODY PLASTIC SOIC (W)
TOP VIEW
1
2
24
23
22
21
20
19
18
17
16
15
14
13
V12
VID4
VID3
VID2
VID1
VID0
PGood
V5
UGate1
Phase1
LGate1
PGnd
OCSet1
Vsen1
Fb1
3
4
5
6
7
8
En
9
SS
Fb3
10
11
12
Fault / Rt
Fb2
Gate3
Gnd
Vin2
Vout2
qJA =80°C/W
ELECTRICAL SPECIFICATIONS
Unless otherwise specified ,these specifications apply over ,V12 = 12V, V5 = 5V and Ta=0 to 70°C. Typical values
refer to Ta =25°C. Low duty cycle pulse testing are used which keeps junction and case temperatures equal to the
ambient temperature.
PARAMETER
SYM TEST CONDITION
Supply ramping up
MIN
TYP
MAX
UNITS
Supply UVLO Section
UVLO Threshold-12V
UVLO Hysterises-12V
UVLO Threshold-5V
UVLO Hysterises-5V
Supply Current
10
V
V
V
V
0.4
4.3
0.3
Supply ramping up
Operating Supply Current
I12
I5
V12
V5
6
20
mA
Switching Controller, Vcore (Vout 1)
VID Section
DAC output voltage (note 1)
DAC Output Line Regulation
DAC Output Temp Variation
VID Input LO
Vdac
0.99Vs Vs
1.01Vs
0.8
V
0.1
0.5
%
%
V
VID Input HI
2
V
VID input internal pull-up
resistor to V5
27
kW
Rev. 1.4
12/8/00
4-2
UNISEM [ UNISEM ]
