Datasheet LTC7150S, LTC7150S-4 (Analog Devices) - 7

LTC7150S/LTC7150S-4
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 12V, VOUT = 1.2V, unless otherwise noted. Discontinuous Conduction Mode Continuous Conduction Mode Operation Operation Period Jitter vs tON
5.00 fSW = 1MHz CLKOUT IP-P = 6A 5V/DIV 4.60 SW 5V/DIV SW σ (ns) 4.20 10V/DIV TER 1 IL 3.80 5A/DIV IL 10A/DIV PERIOD JIT 3.40 7150S G20 1µs/DIV 7150S G19 500ns/DIV VIN = 12V, VOUT = 1.2V VIN = 12V, VOUT = 1.2V IOUT = 1.5A, L = 0.15µH, fSW = 1MHz IOUT = 0A, L = 0.15µH, fSW = 1MHz 3.00 0 100 200 300 400 500 tON (ns) 7150S G21
Active Current vs SVIN, Period Jitter vs IP-P DCM No Load Start-Up Waveform
6 3.0 VIN = 12V V V OUT = 1.2V RUN 5 f 2.5 2V/DIV SW = 1MHz VPGOOD 4 5V/DIV σ (ns) 2.0 VOUT TER 1 3 1.5 1V/DIV (mA) I Q IL 2 1.0 10A/DIV PERIOD JIT 1 0.5 2ms/DIV 7150S G24 VTRACK = 0V VIN = 12V, CTRACK/SS = 0.1µF 0 0 ROUT = 0.1Ω, L = 0.15µH, fSW = 1MHz 0 2 4 6 8 10 12 0 5 10 15 20 RFB1 = 10kΩ, RFB2 = 10kΩ IPK–PK (A) SVIN (V) COUT = 2 × 100µF + 2 × 330µF 7150S G22 7150S G23
Valley Current Limit Start-Up with Pre-Biased Output Valley Current Limit vs VITH vs Temperature
24 26 VRUN 2V/DIV 16 VPGOOD 25 5V/DIV 8 VOUT 1V/DIV 0 24 IL –8 10A/DIV VALLEY CURRENT LIMIT (A) 23 VALLEY CURRENT LIMIT (A) 2ms/DIV 7150S G25 –16 VIN = 12V, CTRACK/SS = 0.1µF ROUT = 0.1Ω, L = 0.15µH, fSW = 1MHz –24 22 RFB1 = 10kΩ, RFB2 = 10kΩ 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 –50 –25 0 25 50 75 100 125 150 COUT = 2 × 100µF + 2 × 330µF VITH (V) TEMPERATURE (°C) 7150S G26 7150S G27 Rev. B For more information www.analog.com 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Photo Revision History Typical Application Related Parts