LP87332D datasheet(59/74 Pages) TI1

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Output Current (A)

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

0.98

0.985

0.99

0.995

1.005

1.01

1.015

1.02

D019

Vin=3.3V, AUTO

Vin=5.0V, AUTO

Input Voltage (V)

2.5

3.5

4.5

5.5

0.98

0.984

0.988

0.992

0.996

1.004

1.008

1.012

1.016

1.02

D021

Output Current (A)

0.001

0.01

0.1

100

D011

Vout=1V

Vout=1.8V

Vout=2.5V

Output Current (A)

0.5

1.5

2.5

0.98

0.984

0.988

0.992

0.996

1.004

1.008

1.012

1.016

1.02

D015

Vin=3.3V, FPWM

Vin=5.0V, FPWM

Output Current (A)

0.001

0.01

0.1

100

D003

Vin=5V, AUTO

Vin=3.3V, AUTO

Vin=5V, FPWM

Vin=3.3V, FPWM

Output Current (A)

0.001

0.01

0.1

100

D007

Vout=1V

Vout=1.8V

Vout=2.5V

LP87332D

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SNVSAU6 – NOVEMBER 2017

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8.2.3 Application Curves

Measurements are done using typical application set up with connections shown in Figure 25. Graphs may not

reflect the OTP default settings. Unless otherwise specified: V(VIN_Bx) = V(VIN_LDOx) = V(VANA) = 3.7 V, VOUT_Bx = 1

V, VOUT_LDOx = 1 V, TA = 25°C, L = 0.47 µH (TOKO DFE252012PD-R47M), COUT_BUCK = 22 µF, and CPOL_BUCK =

22 µF, COUT_LDO = 1 µF.

VOUT = 1.8 V

Figure 26. Buck Efficiency in PFM/PWM and Forced PWM

Mode

VIN = 3.3 V

Figure 27. Buck Efficiency in Forced PWM Mode

VIN = 5 V

Figure 28. Buck Efficiency in Forced PWM Mode

VOUT = 1 V

Figure 29. Buck Output Voltage vs Load Current in Forced

PWM Mode

VOUT = 1 V

Figure 30. Buck Output Voltage vs Load Current in

PFM/PWM Mode

VOUT = 1 V

Load = 1 A

Figure 31. Buck Output Voltage vs Input Voltage in PWM

Mode

LP87332D Datasheet(PDF) 59 Page - Texas Instruments

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