Datasheet LTC3429, LTC3429B (Analog Devices) - 2

FabricanteAnalog Devices
Descripción600mA, 500kHz Micropower Synchronous Boost Converter with Output Disconnect
Páginas / Página12 / 2 — ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL …
Formato / tamaño de archivoPDF / 204 Kb
Idioma del documentoInglés

ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL CHARACTERISTICS The

ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) ELECTRICAL CHARACTERISTICS The

Línea de modelo para esta hoja de datos

Versión de texto del documento

LTC3429/LTC3429B
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
ORDER PART VIN Voltage .. –0.3V to 4.4V TOP VIEW NUMBER SW Voltage ... – 0.3V to 6V SW 1 6 V SHDN, FB Voltage ... – 0.3V to 6V IN LTC3429ES6 GND 2 5 VOUT VOUT ... – 0.3V to 6V LTC3429BES6 FB 3 4 SHDN Operating Temperature Range (Note 2) .. – 40°C to 85°C S6 PACKAGE S6 PART MARKING Storage Temperature Range ... – 65°C to 150° 6-LEAD PLASTIC TSOT-23 Lead Temperature (Soldering, 10 sec).. 300°C LTH5 TJMAX = 125°C, θJC = 102°C/W LTBMS Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 1.2V, VOUT = 3.3V, unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Start-Up Voltage ILOAD = 1mA, VOUT = 0V 0.85 1 V Minimum Operating Voltage SHDN = VIN (Note 3) 0.5 0.65 V Output Voltage Adjust Range (Note 5) 2.5 5 V Feedback Voltage ● 1.192 1.230 1.268 V Feedback Input Current VFB = 1.25V 1 50 nA Quiescent Current (Burst Mode Operation) VFB = 1.4V (Note 4) 20 30 µA Quiescent Current (Shutdown) VSHDN = 0V, Not Including Switch Leakage, VOUT = 0V 0.01 1 µA Quiescent Current (Active) Measured on VOUT, Nonswitching 380 550 µA NMOS Switch Leakage VSW = 5V 0.1 5 µA PMOS Switch Leakage VSW = 5V, VOUT = 0V 0.1 5 µA NMOS Switch On Resistance 0.35 Ω PMOS Switch On Resistance 0.45 Ω NMOS Current Limit 600 850 mA Burst Mode Operation Current Threshold L = 4.7µH (LTC3429 Only) 1.25 mA Current Limit Delay to Output 40 ns Max Duty Cycle VFB = 1.15V ● 80 90 % Switching Frequency ● 380 500 620 kHz SHDN Input High 1 V SHDN Input Low 0.35 V SHDN Input Current VSHDN = 5.5V 0.01 1 µA Soft-Start Time SHDN to 90% of VOUT 2.5 ms
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 3:
Minimum VIN operation after start-up is only limited by the of a device may be impaired. battery’s ability to provide the necessary power as it enters a deeply
Note 2:
The LTC3429ES6/LTC3429BES6 are guaranteed to meet discharged state. performance specifications from 0°C to 70°C. Specifications over the
Note 4:
Burst Mode operation IQ is measured at VOUT. Multiply this value –40°C to 85°C operating temperature range are assured by design, by VOUT/VIN to get the equivalent input (battery) current. characterization and correlation with statistical process controls.
Note 5:
For applications where VOUT > 4.3V, an external Schottky diode is required. See the Applications Information. 3429fa 2