lt3462a Linear Technology Corporation, lt3462a Datasheet
lt3462a
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lt3462a Summary of contents
Page 1
... DC/DC converters. Both devices feature an integrated Schottky and a low V switch allowing a small converter footprint and lower parts cost. The LT3462 switches at 1.2MHz while the LT3462A switches at 2.7MHz. These high speeds enable the use of tiny, low cost and low height capacitors and inductors. ...
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... Error Amp Offset Voltage SDREF Reference Source Current Supply Current SDREF Line Regulation Switching Frequency (LT3462) Switching Frequency (LT3462A) Maximum Duty Cycle (LT3462) Maximum Duty Cycle (LT3462A) Switch Current Limit Switch V CESAT Switch Leakage Current Rectifier Leakage Current Rectifier Forward Drop ...
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... W U TYPICAL PERFOR A CE CHARACTERISTICS Oscillator Frequency (LT3462) 1.6 1.5 1.4 1.3 1.2 1.1 1.0 –40 – 100 TEMPERATURE ( C) 3462 G01 Oscillator Frequency (LT3462A) 3 3.0 2.8 2.6 2.4 2.2 2.0 –40 – 100 TEMPERATURE ( C) 3462 G04 CTIO S SW (Pin 1): Switch Pin. Connect to external inductor L1 and positive terminal of transfer cap. ...
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... C ISRC 3 A 180 A RAMP GENERATOR 1.2MHz* OSCILLATOR *LT3462A IS 2.7MHz – Figure 1. Block Diagram output state of the PWM comparator. This current limit cell protects the power switch as well as various external components connected to the LT3462. SDREF is a dual function input pin. When driven low it shuts the part down, reducing quiescent supply current to less than 10 A ...
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... For LT3462, a value suitable if using a coupled inductor such as Sumida CLS62-220. If using two separate inductors, increasing the value will result in the same ripple current. For LT3462A, a value for the coupled inductor and 22 H for two inductors will be acceptable for most applications. ...
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... LT3462/LT3462A U TYPICAL APPLICATIO S 3.3V to –12V with Soft-Start Circuit 3.3V R1 267k 4 LT3462 27.4k SDREF GND OFF C1: TAIYO YUDEN X5R JMK212BJ475MG C2: TAIYO YUDEN X5R EMK212BJ105MG C3: TAIYO YUDEN EMK316BJ225 L1, L2: MURATA LQH32CN470 V Reaches –12V in 750 s; Input ...
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... U S6 Package 6-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1636) 2.90 BSC (NOTE 4) 1.22 REF 1.50 – 1.75 2.80 BSC 1.4 MIN (NOTE 4) PIN ONE ID 0.95 BSC 0.80 – 0.90 0.09 – 0.20 (NOTE 3) 1.00 MAX LT3462/LT3462A 5V to –5V Supply (LT3462A 267k SW D 22pF LT3462A 68 ...
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... LT3462/LT3462A U TYPICAL APPLICATIO S 12V to –36V DC/DC Converter 12V LT3462 SDREF GND C1: TAIYO YUDEN X5R EMK212BJ105 C2: MURATA GRM42-6X7R474K50 C3: MURATA GRM42-6X7R474K50 2 D1: CENTRAL CMSH5-4-LTN L1: MURATA LQH32CN470 RELATED PARTS PART NUMBER DESCRIPTION LT1617/LT1617-1 350mA/100mA (I ) High Efficiency SW Micropower Inverting DC/DC Converter ...