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LM3492HCMH 데이터시트(PDF) 4 Page - Texas Instruments

부품명 LM3492HCMH
상세설명  Two-Channel, Individual Dimmable LED Driver
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
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LM3492HC-Q1, LM3492HC
SNVS797B – MARCH 2012 – REVISED OCTOBER 2015
www.ti.com
Pin Functions (continued)
PIN
TYPE(1)
DESCRIPTION
NAME
NO.
Current regulator ground. Must be connected to the GND pin and exposed pad for normal operation.
LGND
14
G
The LGND and GND pins are not internally connected.
17
Integrated MOSFET ground. Must be connected to the GND pin and exposed pad for normal
PGND
G
operation. The PGND and GND pins are not internally connected.
18
Frequency control pin. An external resistor from the VOUT pin to this pin sets the switching
RT
6
I
frequency.
3
SW
I
Switch node. Internally connected to the drain of the integrated MOSFET.
4
Internal LED regulator output. Nominally regulated to 5.5 V. Connect a capacitor of 0.47-
μF or larger
VCC
19
O
between the VCC and GND pins.
VIN
2
I
Input supply voltage pin. Input voltage range is from 4.5 V to 65 V.
VOUT
5
I
Output voltage sense pin. Senses the output voltage for nearly constant switching frequency control.
Exposed Pad
G
Thermal connection pad. Connect to a ground plane.
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
(1)
MIN
MAX
UNIT
VIN, RT, VOUT to GND, SW to GND
−0.3
67
Input voltage
V
SW to GND (transient <100 ns)
−2
ILIM to GND
−0.3
1
Output voltage
FB to GND
−0.3
5
V
COMM, DIM1, DIM2, to GND
−0.3
6
Junction temperature, TJ
150
°C
Storage temperature, Tstg
–65
150
(1)
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
7.2 ESD Ratings
VALUE
UNIT
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)
±2000
V(ESD)
Electrostatic discharge
V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2)
±750
(1)
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Pins listed as ±2000
V may actually have higher performance.
(2)
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Pins listed as ±750 V
may actually have higher performance.
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
Supply input voltage, VIN
4.5
65
V
Junction temperature, TJ
−40
125
°C
4
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Product Folder Links: LM3492HC-Q1 LM3492HC


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