HV9803LG-G Supertex, HV9803LG-G Datasheet
HV9803LG-G
Specifications of HV9803LG-G
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HV9803LG-G Summary of contents
Page 1
... LD can accept a reference voltage up to 2.5V. The IC is equipped with a current limit comparator for hiccup-mode output short circuit protection. It also features a programmable input under-voltage shutdown VDD PWMD GATE HV9803 LD CS UVLO RT R GND Supertex inc. www.supertex.com ...
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... Ordering Information Part Number Package Option HV9803LG-G 8-Lead SOIC -G denotes a lead (Pb)-free / RoHS compliant package Absolute Maximum Ratings* Parameter VDD, GATE, CS LD, RT, PWMD, UVLO Junction temperature range Storage temperature range Power dissipation @ 25°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device ...
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... V --- 150 +30mV CS LIM 500 Ω --- 300 mV --- 430 +30mV CS LIM 11.3 μ 250kΩ T 1.2 μ 25kΩ --- - GATE - GATE 500pF GATE 500pF GATE 1. rising UVLO - mV V falling UVLO Supertex inc. www.supertex.com = A ...
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... TOFF R Timer Reset The HV9803 employs Supertex’ patented control scheme, achieving fast and very accurate control of average current in the buck inductor through sensing the switch current only. No compensation of the current control loop is required. The inductor current ripple amplitude does not affect this ...
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... Case 2 – PWMD=Hi: The RT pin is pulled up, shutting off the timer. GATE is off. This will overdrive the under-voltage threshold. However, since V condition is harmless to the IC, there is no effect. LD overdrives the UVLO lower than the UVLO threshold, the IC shuts off. No effect otherwise. Supertex inc. HV9803 UV IN www.supertex.com ...
Page 6
... When the pin is pulled high, the gate driver operates normally. This pin is the under-voltage comparator input also used to form a short-circuit protection skip 7 UVLO delay This pin is the reference voltage input for programming the LED current. Doc.# DSFP-HV9803 NR012313 6 HV9803 Supertex inc. www.supertex.com ...
Page 7
... JEDEC Registration MS-012, Variation AA, Issue E, Sept. 2005. * This dimension is not specified in the JEDEC drawing. Drawings are not to scale. Supertex Doc. #: DSPD-8SOLGTG, Version I041309. (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to http://www.supertex.com/packaging.html.) does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives Supertex inc ...