Datasheet

LTC4232
2
4232fa
16
15
14
13
12
11
10
9
17
SENSE
1
2
3
4
5
6
7
8
TOP VIEW
DHC PACKAGE
16-LEAD (5mm × 3mm) PLASTIC DFN
V
DD
I
SET
I
MON
FB
F LT
PG
GATE
OUT
V
DD
UV
OV
TIMER
INTV
CC
GND
OUT
OUT
T
JMAX
= 125°C, θ
JA
= 46°C/W
EXPOSED PAD (PIN 17) IS SENSE,
θ
JA
= 46°C/W SOLDERED, OTHERWISE θ
JA
= 140°C/W
pin conFiguraTionabsoluTe MaxiMuM raTings
Supply Voltage (V
DD
) ................................. –0.3V to 28V
Input Voltages
FB, OV, UV ..............................................–0.3V to 12V
TIMER ................................................... –0.3V to 3.5V
SENSE .............................V
DD
– 10V or – 0.3V to V
DD
Output Voltages
I
SET
, I
MON
................................................. –0.3V to 3V
PG, FLT .................................................. –0.3V to 35V
OUT ............................................ –0.3V to V
DD
+ 0.3V
INTV
CC
.................................................. –0.3V to 3.5V
GATE (Note 3) ........................................ –0.3V to 33V
Operating Temperature Range
LTC4232C ................................................ 0°C to 70°C
LTC4232I .............................................–40°C to 85°C
Junction Temperature (Notes 4, 5) ........................ 125°C
Storage Temperature Range .................. –65°C to 150°C
(Notes 1, 2)
elecTrical characTerisTics
The l denotes those specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
DD
= 12V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
DC Characteristics
V
DD
Input Supply Range
l
2.9 15 V
I
DD
Input Supply Current MOSFET On, No Load
l
1.6 3 mA
V
DD(UVL)
Input Supply Undervoltage Lockout V
DD
Rising
l
2.63 2.73 2.85 V
I
OUT
OUT Pin Leakage Current V
OUT
= V
GATE
= 0V, V
DD
= 15V
V
OUT
= V
GATE
= 12V
l
l
1
0
2
±150
4
µA
µA
∆V
GATE
/∆t GATE Pin Turn-On Ramp Rate
l
0.15 0.3 0.55 V/ms
R
ON
MOSFET + Sense Resistor On-Resistance
l
15 33 50 mΩ
I
LIM(TH)
Current Limit Threshold V = 1.23V, I
SET
Open
l
5.0 5.6 6.1 A
V
FB
= 0V, I
SET
Open
l
1.2 1.5 1.8 A
V
FB
= 1.23V, R
SET
= 20kΩ
l
2.6 2.9 3.3 A
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4232CDHC#PBF LTC4232CDHC#TRPBF 4232
16-Lead (5mm × 3mm) Plastic DFN
0°C to 70°C
LTC4232IDHC#PBF LTC4232IDHC#TRPBF 4232
16-Lead (5mm × 3mm) Plastic DFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/