P2172

P2172_15 UTC | Alldatasheet

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UNISONIC TECHNOLOGIES CO., LTD P2172 Preliminary LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 7 Copyright © 2013 Unisonic Technologies Co., Ltd QW-R103-067.a 100KHZ, 1.25A HIGH EFFICIENCY SWITCHING REGULATORS „ DESCRIPTION The UTC P2172 is monolithic high power switching regulators. It can be operated in all standard switching configurations including boost, buck, fly-back, forward, inverting and “Cuk.” By utilizing current-mode switching techniques, they provide excellent AC and DC load and line regulation. „ FEATURES * Wide Input Voltage Range: 3V~60V * Low Quiescent Current: 6mA * Very Few External Parts Required * Self-Protected Against Overloads * Operates in Nearly All Switching Topologies * Flyback-Regulated Mode Has Fully Floating Outputs * Can Be Externally Synchronized DIP-8 „ ORDERING INFORMATION Ordering Number Package Packing Lead Free Halogen Free P2172L-D08-T P2172G-D08-T DIP-8 Tube P2172G-D08-T (1)Packing Type (2)Package Type (1) T: Tube (2) D08: DIP-8 (3) L: Lead Free, G: Halogen Free(3)Halogen Free

P2172 Preliminary LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 2 of 7 www.unisonic.com.tw Q W - R 1 0 3 - 0 6 7 . a „ PIN CONFIGURATION „ PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION 1 GND Signal ground. Keep separate from power grounds (E1 and E2). 2 V C Output of transconduc tance error amplifier. 3 FB Error amplifier inverting input.

4 NC Not connect

5 V IN Input supply voltage

6 E1 Power return of first transistor (Q 1). This pin must be connected to ground 7 V SW Collector of output transistors. 8 E2 Grounding this pin sets the current limit point to the maximum value. If pin is left open, the current limit is set to half its maximum value

P2172 Preliminary LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 3 of 7 www.unisonic.com.tw Q W - R 1 0 3 - 0 6 7 . a „ BLOCK DIAGRAM 2.3V REG 2.3V VIN OSC LOGIC DRIVER ANTISATMODE SELECT FLY-BACK EA PWM EA SENSES.D. COMP FB 1.24V 0.15V GND V C 16V E1 E2 Q2Q1 0.16Ω 0.16Ω UVLO VSW 5 7 8621

P2172 Preliminary LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 4 of 7 www.unisonic.com.tw Q W - R 1 0 3 - 0 6 7 . a „ ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage V IN 60 V Switch Output Voltage V SW 60 V Feedback Pin Voltage (Transient, 1ms) ±15 V Operating Junction Temperature Range T J -40~100 °C Storage Temperature Range T STG -65~150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. „ ELECTRICAL CHARACTERISTICS (VIN=15V, VC=0.5V, VFB=VREF, output pin open, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Reference Voltage V REF Measured at Feedback Pin VC=0.8V 1.224 1.244 1.264 V Feedback Input Current I B V FB=VREF 350 750 nA Error Amplifier Transconductance g m △IC=±25μA 3000 4400 6000 μmho Error Amplifier Source or Sink Current V C =1.5V 150 200 350 μA Error Amplifier Clamp Voltage Hi Clamp, VFB=1V 1.80 2.30 V Lo Clamp, VFB=1.5V 0.25 0.38 0.52 V Reference Voltage Line Regulation 3V ≤VIN ≤VMAX, VC=0.8V 0.03 %/V Error Amplifier Voltage Gain A V 0.9V ≤ VC ≤1.4V 500 800 V/V Minimum Input Voltage (Note 3) 2.6 3.0 V Supply Current I Q 3V ≤VIN ≤VMAX, VC=0.6V 6 9 mA Control Pin Threshold Duty Cycle=0 0.8 0.9 1.08 V Normal / Flyback Threshold on Feedback Pin 0.4 0.45 0.54 V Flyback Reference Voltage (Note 3) V FB I FB=50μA 15.0 16.3 17.6 V Change in Flyback Reference Voltage 0.05 ≤IFB≤1mA 4.5 6.8 9 V Flyback Reference Voltage Line Regulation (Note 3) IFB=50μA 7V≤VIN ≤VMAX 0.01 0.03 %/V Flyback Amplifier Transconductance (gm) △IC=±10μA 150 300 650 μmho Flyback Amplifier Source and Sink Current VC=0.6V Source 15 32 70 μA IFB=50μA Sink 25 40 70 Output Switch Breakdown Voltage BV 3V ≤VIN ≤VMAX, ISW=1.5mA 65 80 V Output Switch “On” Resistance (Note 2) V SAT 0.60 1.00 Ω Control Voltage to Switch Current Transconductance 2 A/V Switch Current Limit I LIM Duty Cycle=50% Duty 1.25 3.5 A Cycle=80% (Note 2) 1.00 2.5 A Supply Current Increase During Switch On-Time SW IN I I Δ Δ 25 35 mA/A

P2172 Preliminary LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 5 of 7 www.unisonic.com.tw Q W - R 1 0 3 - 0 6 7 . a „ ELECTRICAL CHARACTERISTICS(Cont.) (VIN=15V, VC=0.5V, VFB=VREF, output pin open, unless otherwise noted.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Switching Frequency f 88 100 112 kHz Maximum Switch Duty Cycle DC MAX 85 92 97 % Shutdown Mode Supply Current 3V ≤VIN≤VMAX, VC=0.05V 100 250 μA Shutdown Mode Threshold Voltage 3V ≤VIN≤VMAX 100 150 250 mV Flyback Sense Delay Time (Note 3) 1.5 μs Notes: 1. Measured with VC in hi clamp, VFB=0.8V, ISW=1A. 2. For duty cycles (DC) between 50% and 80%, minimum guaranteed switch current is given by ILIM=0.833×(2-DC). 3. Minimum input voltage for isolated flyback mode is 7V, VMAX=55V for HV grade in fully isolated mode to avoid switch breakdown.

P2172 Preliminary LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 6 of 7 www.unisonic.com.tw Q W - R 1 0 3 - 0 6 7 . a „ TYPICAL APPLICATION CIRCUIT

1 GND

1000µF 12V 0.25AR1 10.7k 1.24k 10µH Output Filter 100µF 50µH +C3 100µF VIN 1µF Boost Converter (5V~12V)

P2172 Preliminary LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 7 of 7 www.unisonic.com.tw Q W - R 1 0 3 - 0 6 7 . a UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.