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TPS61195 Datasheet(PDF) 6 Page - Texas Instruments |
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TPS61195 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 29 page  TPS61195 SLVSA07 – MAY 2010 www.ti.com ELECTRICAL CHARACTERISTICS (continued) VIN = 12V, DPWM and EN=high, IFB current=20mA, IFB voltage=500mV, TA = –40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VDDIO VDDIO pin output voltage VIN > 5.5V, Iload = 5 mA 2.7 3.15 3.6 V VIN = 12V, EN= low 10 IEN Shutdown current mA 15 VIN = 21V, EN= low VIN ramp down 3.55 VIN_UVLO VIN under-voltage lockout threshold V VIN ramp up 3.80 VIN_Hys VIN under-voltage lockout hysterisis 250 mV EN, SCL, SDA AND PWM VH EN Logic high threshold 1.2 V VL EN Logic Low threshold 0.4 VH DPWM Logic high threshold 2.1 VL DPWM Logic low threshold 0.7 V VH SDA, SCL Logical high threshold 2.1 VL SDA, SCL Logical Low threshold 0.8 VSDA_L SDA Logic low voltage ISOURCE = 4 mA 0.4 V RPD_EN Pull down resistor on EN 400 800 1600 k Ω RPD_PWM Pull down resistor on DPWM 400 800 1600 k Ω Pull down resistor on SCL and RPD_SMBus 1 2 4 M Ω SDA CURRENT REGULATION VISET ISET pin voltage 1.204 1.229 1.253 V KISET Current multiply IFB/ISET IISET = 18.9 mA, D = 100% 1060 IISET = 18.9 mA, D = 100% IFB_AVG Average Current accuracy -1.5% +1.5% TA=0°C to 85°C IISET = 18.9 mA, D = 12.5%, analog IFB_L Low Current accuracy -5% +5% TA=0°C to 85°C IISET = 18.9 mA, D = 100% Km (Imax–Imin)/IAVG 1% 3% TA=0°C to 85°C IFB voltage = 15 V on all pins 5 Ileak IFB pin leakage current mA IFB voltage = 5 V on all pins, total 1 IIFB_max Current sink max output current IFB = 450 mV 30 mA Programmable current sink IIFB_range 0 30 mA regulator range fdim Internal PWM dimming frequency RFDIM = 953K 190 210 230 Hz BOOST OUTPUT REGULATION VIFB_L Output voltage dial up threshold Measured on VIFB(min) 450 mV VIFB_H Output voltage dial down threshold Measured on VIFB(min) 750 mV POWER SWITCH RPWM_SW PWM FET on-resistance VIN = 12V 0.15 0.35 Ω ILN_NFET PWM FET leakage current VSW = 50V, TA = 25°C 2 mA OSCILLATOR fS Oscillator frequency RFSW = 523K 0.8 1.0 1.2 MHz Dmax Maximum duty cycle IFB = 0V 94% Dmin Minimum duty cycle RFSW = 523K 10% OC, SC, OVP AND SS ILIM N-Channel MOSFET current limit D = Dmax 2.5 4.5 A VCLAMP_TH Output voltage clamp program 1.90 1.95 2.00 threshold 6 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): TPS61195 |
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