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US3018CW Datasheet(PDF) 2 Page - UNISEM

Part # US3018CW
Description  5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND 200mA LDO ON BOARD
PDF  17 Pages
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Manufacturer  UNISEM [UNISEM]
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US3018CW Datasheet(HTML) 2 Page - UNISEM

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4-2
Rev. 1.4
12/8/00
US3018
ELECTRICAL SPECIFICATIONS
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
MIN
TYP
MAX
UNITS
Supply UVLO Section
UVLO Threshold-12V
Supply ramping up
10
V
UVLO Hysterises-12V
0.4
V
UVLO Threshold-5V
Supply ramping up
4.3
V
UVLO Hysterises-5V
0.3
V
Supply Current
Operating Supply Current
I12
V12
6
mA
I5
V5
20
Switching Controller, Vcore (Vout 1)
VID Section
DAC output voltage (note 1)
Vdac
0.99Vs
Vs
1.01Vs
V
DAC Output Line Regulation
0.1
%
DAC Output Temp Variation
0.5
%
VID Input LO
0.8
V
VID Input HI
2
V
VID input internal pull-up
27
k
Ω
resistor to V5
ABSOLUTE MAXIMUM RATINGS
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
PACKAGE INFORMATION
24 PIN WIDE BODY PLASTIC SOIC (W)
θJA=80°C/W
V12
VID4
VID3
VID2
VID1
VID0
PGood
V5
SS
Fault / Rt
Fb2
Vin2
Vout2
Gnd
Gate3
Fb3
En
Fb1
Vsen1
OCSet1
PGnd
LGate1
Phase1
UGate1
4
3
2
1
21
22
23
24
7
6
5
18
19
20
TOP VIEW
12
13
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8
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