Datasheet LT3694, LT3694-1 (Analog Devices) - 6

LT3694/LT3694-1
TYPICAL PERFORMANCE CHARACTERISTICS VIN = 12V, TA = 25°C, unless otherwise noted. EN/UVLO Thresholds Minimum Input Voltage ITRK/SS vs Temperature vs Temperature vs Load Current (VIN to Start)
4.0 1.4 7.0 VOUT = 5V UVLO SWITCHING THRESHOLD fSW = 800kHz 1.2 6.5 3.5 TO START 1.0 6.0 0.8 TAGE (V) 3.0 5.5 TO RUN 0.6 BIAS CURRENT SHUTDOWN THRESHOLD INPUT VOL 5.0 0.4 TRK/SS CURRENT (µA) 2.5 EN/UVLO THRESHOLD (V) 4.5 0.2 2.0 0 4.0 –50 0 50 100 150 –50 0 50 100 150 0.001 0.01 0.1 1 TEMPERATURE (°C) TEMPERATURE (°C) LOAD CURRENT (A) 36941 G10 36941 G11 36941 G12
LDO Current Limit LDO Minimum VIN to DRV Voltage LDO Current Limit vs Temperature vs VFB (Foldback) vs DRV Current
5 60 2.5 4 +150°C 50 3 –40°C 2.0 2 TAGE (mV) 40 1 TAGE (V) 1.5 0 30 V VOL –1 1.0 20 –2 TO DR V IN –3 CURRENT LIMIT VOL 10 0.5 NORMALIZED CURRENT LIMIT (%) –4 0 –5 0 0.2 0.4 0.6 0.8 0 –50 0 50 100 150 0 2 4 6 8 10 FEEDBACK VOLTAGE (V) TEMPERATURE (°C) 36941 G14 DRV CURRENT (mA) 36941 G13 36941 G15
LDO Minimum BIAS to DRV Voltage vs DRV Current 10Hz to 100kHz LDO Output Noise
0.5 VIN = 5V VOUT = 2.5V ZXTCM322 VBIAS = 4.4V IOUT = 0.25A PASS XSTR 0.4 TAGE (V) 0.3 10mV/DIV V VOL 0.2 BIAS TO DR 0.1 0 0 2 4 6 8 10 36941 G17 1ms/DIV DRV CURRENT (mA) 36941 G16 36941fb 6 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts