VOUT (500 mV/div)

Time (50 µs/div)

VIN (1 V/div)

IIN (100 mA/div)

Load

VBAT

IN

OUT

EN

GND

TLV733

19

TLV733P

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8.2.2 Capacitor-Free Operation from Battery Input Supply

Figure 37. Capacitor-Free Operation from Battery Input Supply

8.2.2.1 Design Requirements

Table 3. Design Parameters

PARAMETER

DESIGN REQUIREMENT

Input voltage

3.0 V to 1.8 V (two 1.5-V batteries)

Output voltage

1.0 V, ±1%

Input current

200 mA, maximum

Output load

100-mA dc

Maximum ambient temperature

70°C

8.2.2.2 Design Considerations

An input capacitor is not required for this design because of the low impedance connection directly to the battery.

No output capacitor allows for the minimal possible inrush current during startup, ensuring the 200-mA maximum

input current is not exceeded.

Verify that the maximum junction temperature is not exceeded by referring to Figure 34.

8.2.2.3 Application Curve

Figure 38. No Inrush Startup, 3.0-V to 1.0-V Regulation