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IMP38C45EPD Datasheet(PDF) 5 Page - A1 PROs co., Ltd. |
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IMP38C45EPD Datasheet(HTML) 5 Page - A1 PROs co., Ltd. |
5 / 10 page IMP38C/HC/42/3/4/5 IMP38C/HC/42/3/4/5 © 2000 IMP, Inc. PWM Controllers 5 Electrical Characteristics Parameter Symbol Conditions Min Typ Max Units Current Sense Gain AVOL Notes 1, 2 and 3 2.90 3.00 3.10 V/V Over Current Protection Threshold Vcomp = max, Note 2 0.9 0.98 1.1 V Power Supply Rejection Ratio PSRR VSTART ≤ VCC ≤ 18V 70 dB Input Bias Current IB – 0.1 – 2.0 µA Delay to Output TPD VFB = 0V, ISNS 0V to 2V, CL = 1nF 50 65 ns Output IMP38C4x ON Resistance, High RDS (ON) ISOURCE = 0.2A 20 Ω ON Resistance, Low ISINK = 0.2A 11 IMP38HC4x ON Resistance, High RDS (ON) ISOURCE = 0.2A 10 Ω ON Resistance, Low ISINK = 0.2A 5.5 Peak Drive Current HC devices 1.0 A H devices 0.5 IMP38C4x Rise Time TR TA = 25 °C, CL = 1nF 40 70 ns IMP38C4x Fall Time TF TA = 25 °C, CL = 1nF 30 50 ns IMP38HC4x Rise Time TR TA = 25 °C, CL = 1nF 20 50 ns IMP38HC4x Fall Time TF TA = 25 °C, CL = 1nF 15 40 ns Shoot-through Current 0mA Undervoltage Lockout Start Threshold IMP38C42/4, IMP38HC42/4 13.5 14.5 15.5 V IMP38C43/5, IMP38HC43/5 7.8 8.4 9.0 Minimum Operating Voltage IMP38C42/4, IMP38HC42/4 8 9 10 V IMP38C43/5, IMP38HC43/5 7.0 7.6 8.2 Pulse Width Modulator Maximum Duty Cycle IMP38C42/3, IMP38HC42/3, 94 96 % Maximum Duty Cycle IMP38C44/5, IMP38HC44/5 48 50 % Minimum Duty Cycle 0% Supply Current Start-Up Current VCC = 13V for IMP38C42/44, IMP38HC42/44 95 120 µA VCC = 7.5V for IMP38C43/45, IMP38HC43/45 Operating Current ICC VFB = VIS = 0 0.5 1.5 mA Unless otherwise noted, VCC = 15V, RT = 10k Ω and CT = 3.3nF. Specifications are over the – 40°C to +85°C ambient temperature range. Bold/blue specifications indicate enhanced performance features. Note 1. Guaranteed by design. Not 100% tested in production. Note 2. Measured at trip point of VFB = 0V. Note 3. Gain is defined as: s d l o h s e r h T O L V U e l c y C y t u D V 4 . 8 t a p u -t r a t S V 6 . 7 = m u m i n i M g n i t a r e p O V 5 . 4 1 t a p u -t r a t S V 0 . 9 = m u m i n i M g n i t a r e p O % 6 9 o t % 03 4 C H / 3 4 C 8 3 P M I2 4 C H / 2 4 C 8 3 P M I % 0 5 o t % 05 4 C H / 5 4 C 8 3 P M I4 4 C H / 4 4 C 8 3 P M I s p e . 3 0 t _ C H / C 8 3 Table 1. Startup and Operating Voltage Selection Guide A V V , 0 V 0.8V COMP CS CS =≤ ≤ ∆ ∆ Note 4. Adjust VCC above the start threshold before setting at 15V. Note 5. Output frequency equals the oscillator frequency for IMP38C42/3 and IMP38HC42/3 devices. Output frequency equals one-half the oscillator frequency for IMP38C44/5 and IMP38HC44/5 devices. |
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