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MIC2171 Datasheet(PDF) 3 Page - Micrel Semiconductor |
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MIC2171 Datasheet(HTML) 3 Page - Micrel Semiconductor |
3 / 12 page Micrel, Inc. MIC2171 May 2007 3 M9999-051107 Absolute Maximum Ratings Supply Voltage (VIN).......................................................40V Switch Voltage (VSW)......................................................65V Feedback Voltage (transient, 1ms) (VFB) .....................±15V Lead Temperature (soldering, 10 sec.)...................... 300°C Storage Temperature (Ts) .........................–65°C to +150°C ESD Rating (1) Operating Ratings Operating Temperature Range ................... –40°C to +85°C Junction Temperature (TJ) ........................–55°C to +150°C Thermal Resistance TO-220-5 ( θJA) (2) ...............................................45°C/W TO-263-5 ( θJA) (3) ................................................45°C/W Electrical Characteristics VIN = 5V; TA = 25°C, bold values indicate –40°C< TA < +85°C, unless noted. Parameter Condition Min Typ Max Units Reference Section Feedback Voltage (VFB) VCOMP = 1.24V 1.220 1.214 1.240 1.264 1.274 V V Feedback Voltage Line Regulation 3V ≤ VIN ≤ 40V VCOMP = 1.24V 0.6 %/V Feedback Bias Current (IFB) VFB = 1.24V 310 750 1100 nA nA Error Amplifier Section Transconductance (gm) ∆ICOMP = ±25µA 3.0 2.4 3.9 6.0 7.0 µA/mV µA/mV Voltage Gain (AV) 0.9V ≤ VCOMP ≤ 1.4V 400 800 2000 V/V Output Current VCOMP = 1.5V 125 100 175 350 400 µA µA Output Swing High Clamp, VFB = 1V Low Clamp, VFB = 1.5V 1.8 0.25 2.1 0.35 2.3 0.52 V V Compensation Pin Threshold Duty Cycle = 0 0.8 0.6 0.9 1.08 1.25 V V Output Switch Section ON Resistance ISW = 2A, VFB = 0.8V 0.37 0.50 0.55 Ω Ω Current Limit Duty Cycle = 50%, TJ ≥ 25°C Duty Cycle = 50%, TJ < 25°C Duty Cycle = 80%, Note 4 2.5 2.5 2.5 3.6 4.0 3.0 5.0 5.5 5.0 A A A Breakdown Voltage (BV) 3V ≤ VIN ≤ 40V ISW = 5mA 65 75 V Oscillator Section Frequency (fO) 88 85 100 112 115 kHz kHz Duty Cycle [ δ(max)] 80 90 95 % Input Supply Voltage Section Minimum Operating Voltage 2.7 3.0 V Quiescent Current (IQ) 3V ≤ VIN ≤ 40V, VCOMP = 0.6V, ISW = 0 7 9 mA Supply Current Increase (∆IIN) ∆ISW = 2A, VCOMP = 1.5V, during switch on-time 9 20 mA Notes: 1. Devices are ESD sensitive. Handling precautions recommended. 2. Mounted vertically, no external heat sink, 1/4 inch leads soldered to PC board containing approximately 4 inch squared copper area surrounding leads. 3. All ground leads soldered to approximately 2 inches squared of horizontal PC board copper area. 4. For duty cycles ( δ) between 50% and 95%, minimum guaranteed switch current is ICL = 1.66 (2-δ) Amp (Pk). |
Similar Part No. - MIC2171_07 |
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Similar Description - MIC2171_07 |
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