Datasheet MP2307 (Monolithic Power Systems) - 4

MP2307 – 3A, 23V, 340KHz SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER TYPICAL PERFORMANCE CHARACTERISTICS C1 = 2 x 10µF, C2 = 2 x 22µF, L= 10µH, CSS= 0.1µF, TA = +25°C, unless otherwise noted. Steady State Test Steady State Test Startup through Waveforms Waveforms Enable Waveforms
VIN = 12V, VOUT = 3.3V, IOUT = 0A VIN = 12V, VOUT = 3.3V, IOUT = 3A VIN = 12V, VOUT = 3.3V, No Load VIN VIN VEN 20mV/div. 200mV/div. 5V/div. VOUT VOUT 20mV/div. 20MV/div. VOUT 2V/div. VSW VSW 10V/div. V/div. I I L L 1A/div. IL 1A/div. 2A/div. VSW 10V/div. 2ms/div. MP2307-TPC01 MP2307-TPC02 MP2307-TPC03
Startup Through Shutdown Through Shutdown Through Enable Waveforms Enable Waveforms Enable Waveforms
VIN = 12V, VOUT = 3.3V, VIN = 12V, VOUT = 3.3V, IOUT = 3A (Resistance Load) VIN = 12V, VOUT = 3.3V, No Load IOUT = 3A (Resistance Load) VEN V 5V/div. EN VEN 5V/div. 5V/div. VOUT MP2393 2V/div. VOUT VOUT 2V/div. 2V/div. I I L L 1A/div. 2A/div. I O L 2A/div. VSW VSW 10V/div. 10V/div. VSW 10V/div. 2ms/div. 2ms/div. RECOMMENDED FOR MP2307-TP04 MP2307-TPC05 MP2307-TPC06 NEW DESIGNS
Load Transient Test Short Circuit Test Short Circuit Recovery Waveforms Waveforms Waveforms
VIN = 12V, VOUT = 3.3V, IOUT = 1A to 2A step VIN = 12V, VOUT = 3.3V VIN = 12V, VOUT = 3.3V V NOTOUT 200mV/div. VOUT VOUT 2V/div. 2V/div. REFER T IL 1A/div. ILOAD I 1A/div. L 2A/div. IL 2A/div. MP2307 -TPC07 MP2307-TPC08 MP2307-TPC09

MP2307 Rev. 1.9 www.MonolithicPower.com
4
5/28/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 MPS. All Rights Reserved.