Texas Instruments TLV70728EVM-612 Evaluation Module for 200 mA, Low IQ, Low-Dropout Regulator TLV70728EVM-612 TLV70728EVM-612 Datenbogen
Produktcode
TLV70728EVM-612
EN
Vout
lin
Vout
Iout
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Test Results
4.1
Turnon Sequence
shows the turnon/off characteristic where VIN is preset to 3 V, the output drives full load, and the
EN turnon is stepped to 3 V (C4, green). The output soft start (C3, blue) shows a monotonic rise time of
approximately 50µs after a built in delay of approximately 70µs. The input rush current (C2, red) follows
the output voltage ramp. The output voltage startup ramp is not load dependant.
approximately 50µs after a built in delay of approximately 70µs. The input rush current (C2, red) follows
the output voltage ramp. The output voltage startup ramp is not load dependant.
Figure 1. Turnon Sequence: C4 EN – Turnon to 3 V, C3 OUT – 2.8-V Turnon Ramp, C2 – Input Rush
Current at Turnon
4.2
Output Load Transient
shows the load transient response – oscilloscope C3 – for a full-load step transient. The load
current, transient step is shown on oscilloscope C2.
Figure 2. Step Load and Transient Response: C2 – Full Load Step Current Transient, C3 OUT – Output
Voltage Transient Response
3
SLVU416 – December 2010
TPS70728EVM-612
© 2010, Texas Instruments Incorporated