LM3423MH

LM3423MH, TSSOP, N-channel controller, -0.3V to 8.0V, -100μA

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Price:: US $0.30~0.50 / piece [Get Latest Price]

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Qty (lots)	Price/lot
1 ~ 1000 :	0.50 / Piece
1001 ~ 10000 :	0.40 / Piece
10001 ~ 100000 :	0.30 / Piece

PartNumber:: LM3423MH

Brand:: National Semiconductor - NS | Pack: TSSOP | D/C: 13+

Availability:: Supply Ability: 10000/Day Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

Quantity:: piece

Total Price:: US $0

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Products Upload time: 2013-07-26

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Part Number:LM3423MH
US $0.30 - 0.50
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piece

Product Summary

The LM3423MH is an N-channel controller for constant current led driver. The LM3423MH devices are versatile high voltage LED driver controllers. With the capability to be configured in a Buck, Boost, Buck-Boost (Flyback), or SEPIC topology, and an input operating voltage rating of 75V, these controllers are ideal for illuminating LEDs in a very diverse, large family of applications. The LM3423MH includes a high-voltage startup regulator that operates over a wide input range of 4.5V to 75V. The internal PWM controller is designed for adjustable switching frequencies of up to 2.0MHz, thus enabling compact solutions. The LM3423MH also includes an LED output status flag, a fault flag, a programmable fault timer, and a logic input to select the polarity of the dimming output driver. The LM3423MH can be applied in LED drivers, constant-current buck-boost regulator, constant-current boost regulator, constant-current flyback regulator, constant-current SEPIC regulator, and Thermo-Electric cooler (Peltier) drive.

Parametrics

LM3423MH absolute maximum ratings: (1)VIN,EN, PD, nDIM: -0.3V to 76.0V; (2)DPOL: -100μA continuous; (3)RCT: -0.3V to 76.0V; (4)VCC: -0.3V to 8.0V; (5)TIMR: -0.3V to 7.0V; (6)GATE, DDRV: -0.3V to VCC; (7)Maximum Junction Temperature (Internally Limited): 165°C; (8)torage Temperature Range -65°C to +150°C.

Features

LM3423MH features: (1)VIN range from 4.5V to 75V; (2)2% Internal reference voltage (1.235V); (3)Current sense voltage adjustable from 20mV; (4)High-side current sensing; (5)2Ω MOSFET gate driver; (6)Dimming MOSFET gate driver; (7)Input under-voltage protection; (8)Over-voltage protection; (9)Low shutdown current, IQ< 1μA; (10)Fast (50kHz) PWM dimming; (11)Cycle-by-cycle current limit; (12)Programmable switching frequency; (13)LED output status flag (LM3423 only); (14)Fault timer pin (LM3423 only); (15)TSSOP EP 16-lead package (LM3421); (16)TSSOP EP 20-lead package (LM3423).