LP3907QTLX-VXSSSLASHNOPB datasheet(13/53 Pages) TI1

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OUTPUT CURRENT (mA)

100

0.1

100

1000

V = 4.5V

V = 5.5V

OUTPUT CURRENT (mA)

100

0.1

100

1000

V = 4.5V

V = 5.5V

LP3907-Q1

www.ti.com

SNVSA55A – DECEMBER 2014 – REVISED MAY 2015

Typical Characteristics — Buck2 (continued)

VIN= 4.5 V to 5.5 V, TA = 25°C, VOUT = 1.8 V, 3.3 V

VOUT = 2 V

L= 2.2 µH

VOUT = 1.2 V

L= 2.2 µH

Figure 21. Efficiency vs Output Current (PWM-to-PFM Mode)

Figure 20. Efficiency vs Output Current (PWM-to-PFM Mode)

7.15 Typical Characteristics — Bucks

VIN= 3.6 V, TA = 25°C, VOUT = 1.2 V unless otherwise noted.

VOUT = 1.2 V

ILOAD = 300 to 500 mA

VOUT = 1.2 V

ILOAD = 50 to 150 mA

Figure 22. Load Transient Response (PWM Mode)

Figure 23. Mode Change By Load Transient (PFM-to-PWM

Mode)

VIN = 3.6 to 4.2 V

VOUT = 3.3 V

250-mA Load

VIN = 3.6 to 4.2 V

VOUT = 1.2 V

250-mA Load

Figure 25. Line Transient Response

Figure 24. Line Transient Response

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