LT1308 Linear Technology Corporation, LT1308 Datasheet
LT1308
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LT1308 Summary of contents
Page 1
... DC/DC converter that operates from an input voltage as low as 1V. Capable of delivering 5V at load current of 1A from a single Li-Ion cell, the LT1308 also features power saving Burst Mode operation at light loads. High efficiency is maintained over a broad 1mA to 1A load range. ...
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... OUT 1.1V SHDN SHDN SHDN SINK V = 250mV LBI LBO V = 150mV LBI U W ORDER PART TOP VIEW NUMBER 8 LBO LT1308CS8 7 LBI LT1308IS8 PART MARKING S8 PACKAGE 1308 1308I = 80 C/W JA MIN TYP MAX 80 160 1 3 1.20 1.22 1. 0.6 1.1 1.5 0.3 0.8 0. ...
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... – 1.3V (– 1.3V ( – 40 80 (– ( 3 3.3V OUT LT1308 MIN TYP MAX UNITS 1000 3000 V/V 500 V/V 0. 750 mA MIN TYP MAX UNITS 80 160 1.195 1 ...
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... Note 3: Switch current limit guaranteed by design and/or correlation to static tests. Duty cycle affects current limit due to ramp generator (see Block Diagram). Note 4: Bias current flows out of LBI pin. Note 5: The LT1308 will withstand continuous application of 1.6V applied to GND pin while V Transient Response V ...
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... U U APPLICATIONS INFORMATION LAYOUT HINTS The LT1308 switches current at high speed, mandating careful attention to layout for proper performance. You will not get advertised performance with careless layouts. Figure 2 shows recommended component placement. Follow this closely in your PC layout. Note the direct path of the switching loops. Input capacitor C close (< ...
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... Figure 3. Note that allowing SHDN to float turns on both the start- up current (Q2) and the shutdown current (Q3) for The LT1308 doesn’t know what this situation BE and behaves erratically. SHDN voltage above V lowed. This merely reverse-biases Q3’s base emitter junc- tion, a benign condition ...
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... LOAD 100mA 1308F06 200mV/DIV AC COUPLED 400mA I LOAD 50mA 1308 F07 Figure 11. DECT Load Transient Response. With a Single NiCd Cell the LT1308 Provides 3.3V with 400mA Pulsed Load. Pulse Width = 416 s 200mV/DIV AC COUPLED I , 1A/DIV L 400mA I LOAD 1308 F08 Figure 12. DECT Load Transient Response. ...
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... Digital Camera Power Supply L1A L1C 0.3 SW L1B 0.7 R3 340k 4 LT1308 FB GND 2.08M C2 100k 100 F D1 IR10BQ015 D3 BAT- COILTRONICS CTX02-13973 U Dimensions in inches (millimeters) unless otherwise noted. S8 Package 8-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 0.053 – ...