Datasheet LTC3402 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | 2A, 3MHz Micropower Synchronous Boost Converter |
| Seiten / Seite | 16 / 3 — ELECTRICAL CHARACTERISTICS The |
| Dateiformat / Größe | PDF / 235 Kb |
| Dokumentensprache | Englisch |
ELECTRICAL CHARACTERISTICS The
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LTC3402
ELECTRICAL CHARACTERISTICS The
●
denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 1.2V, VOUT = 3.3V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
PGOOD Low Voltage IPGOOD = 1mA 0.1 0.2 V VOUT = 1V, IPGOOD = 20μA 0.1 0.4 V PGOOD Leakage VPGOOD = 5.5V 0.01 1 μA SHDN Input High VIN = VSHDN 1 V SHDN Input Low 0.4 V SHDN Input Current VSHDN = 5.5V 0.01 1 μA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings with statistical process controls. may cause permanent damage to the device. Exposure to any Absolute
Note 3:
Current is measured into the VOUT pin since the supply current is Maximum Rating condition for extended periods may affect device bootstrapped to the output pin and in the application will reflect to the reliability and lifetime.. input supply by (VOUT/VIN) • I/Efficiency. The outputs are not switching.
Note 2:
The LTC3402E is guaranteed to meet performance specifications
Note 4:
Once the output is started, the IC is not dependent upon the VIN from 0°C to 70°C. Specifications over the –40°C to 85°C operating supply. temperature range are assured by design, characterization and correlation
W U TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25
°
C unless otherwise noted) SW Pin and Inductor Current (IC) in Discontinuous Mode. Ringing Control Circuitry Eliminates High Switching Waveform on SW Pin Frequency Ringing Transient Response 5mA to 50mA
IL 50mA/DIV V 0A OUT 100mV/DIV SW 1V/DIV SW 1V/DIV 50mA IOUT 0V 5mA 50ns/DIV 3402 G01 200ns/DIV 3402 G02 COUT = 22μF 200μs/DIV 3402 G03 L = 3.3μH fOSC = 1MHz
Transient Response 50mA to 500mA Burst Mode Operation Burst Mode Operation
VOUT V V OUT OUT AC AC 200mV/DIV 100mV/DIV 100mV/DIV SW 550mA 1V/DIV SW 1V/DIV 50mA COUT = 22μF 200μs/DIV 3402 G04 VIN = 1.2V 5ms/DIV 3402 G05 VIN = 1.2V 200μs/DIV 3402 G06 L = 3.3μH VOUT = 3.3V VOUT = 3.3V fOSC = 1MHz COUT = 100μF COUT = 100μF IOUT = 250μA IOUT = 20mA MODE/SYNC PIN = HIGH MODE/SYNC PIN = HIGH 3402fb 3
ELECTRICAL CHARACTERISTICS The
●
denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 1.2V, VOUT = 3.3V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
PGOOD Low Voltage IPGOOD = 1mA 0.1 0.2 V VOUT = 1V, IPGOOD = 20μA 0.1 0.4 V PGOOD Leakage VPGOOD = 5.5V 0.01 1 μA SHDN Input High VIN = VSHDN 1 V SHDN Input Low 0.4 V SHDN Input Current VSHDN = 5.5V 0.01 1 μA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings with statistical process controls. may cause permanent damage to the device. Exposure to any Absolute
Note 3:
Current is measured into the VOUT pin since the supply current is Maximum Rating condition for extended periods may affect device bootstrapped to the output pin and in the application will reflect to the reliability and lifetime.. input supply by (VOUT/VIN) • I/Efficiency. The outputs are not switching.
Note 2:
The LTC3402E is guaranteed to meet performance specifications
Note 4:
Once the output is started, the IC is not dependent upon the VIN from 0°C to 70°C. Specifications over the –40°C to 85°C operating supply. temperature range are assured by design, characterization and correlation
W U TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25
°
C unless otherwise noted) SW Pin and Inductor Current (IC) in Discontinuous Mode. Ringing Control Circuitry Eliminates High Switching Waveform on SW Pin Frequency Ringing Transient Response 5mA to 50mA
IL 50mA/DIV V 0A OUT 100mV/DIV SW 1V/DIV SW 1V/DIV 50mA IOUT 0V 5mA 50ns/DIV 3402 G01 200ns/DIV 3402 G02 COUT = 22μF 200μs/DIV 3402 G03 L = 3.3μH fOSC = 1MHz
Transient Response 50mA to 500mA Burst Mode Operation Burst Mode Operation
VOUT V V OUT OUT AC AC 200mV/DIV 100mV/DIV 100mV/DIV SW 550mA 1V/DIV SW 1V/DIV 50mA COUT = 22μF 200μs/DIV 3402 G04 VIN = 1.2V 5ms/DIV 3402 G05 VIN = 1.2V 200μs/DIV 3402 G06 L = 3.3μH VOUT = 3.3V VOUT = 3.3V fOSC = 1MHz COUT = 100μF COUT = 100μF IOUT = 250μA IOUT = 20mA MODE/SYNC PIN = HIGH MODE/SYNC PIN = HIGH 3402fb 3