Datasheet Texas Instruments LM3687TL-1812/NOPB — 数据表

LM3687
www.ti.com SNVS473B – DECEMBER 2007 – REVISED MAY 2013 LM3687 Step-Down DC-DC Converter with Integrated Low Dropout Regulator and Startup
Mode
Check for Samples: LM3687 FEATURES 1 DC-DC Converter: 2 750mA Maximum Load Capability
1.8MHz PWM Fixed Switching Frequency
(Typ.)
Automatic PFM/PWM Mode Switching
27ВµA typ. Quiescent Current
Internal Synchronous Rectification for High
Efficiency
Internal Soft Start
Dual Rail Linear Regulator:
Startup Mode
Load Transients < 25mVpeak Typ.
Line Transients < 1mVpeak Typ.
Very Low Dropout Voltage: 82mV Typ. at
350mA Load Current
0.7V ≤ VIN_LIN ≤ 4.5V
10ВµA Typical IQ from VIN_LIN
350mA Maximum Load Capability
Combined Common Features:
65ВµA typical Quiescent Current from VBATT if
Both Regulators are Enabled …