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LP87322E/F Datasheet(PDF) 59 Page - Texas Instruments

Part # LP87322E/F
Description  Dual High-Current Buck Converter and Dual Linear Regulator
PDF  75 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP87322E/F Datasheet(HTML) 59 Page - Texas Instruments

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Output Current (A)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0.98
0.985
0.99
0.995
1
1.005
1.01
1.015
1.02
D019
Vin=3.3V, AUTO
Vin=5.0V, AUTO
Input Voltage (V)
2.5
3
3.5
4
4.5
5
5.5
0.98
0.984
0.988
0.992
0.996
1
1.004
1.008
1.012
1.016
1.02
D021
Output Current (A)
0.001
0.01
0.1
1
2
40
50
60
70
80
90
100
D012
Vout=1V
Vout=1.8V
Vout=2.5V
Output Current (A)
0
0.5
1
1.5
2
0.98
0.984
0.988
0.992
0.996
1
1.004
1.008
1.012
1.016
1.02
D016
Vin=3.3V, FPWM
Vin=5.0V, FPWM
Output Current (A)
0.001
0.01
0.1
1
2
40
50
60
70
80
90
100
D004
Vin=5V, AUTO
Vin=3.3V, AUTO
Vin=5V, FPWM
Vin=3.3V, FPWM
Output Current (A)
0.001
0.01
0.1
1
2
40
50
60
70
80
90
100
D008
Vout=1V
Vout=1.8V
Vout=2.5V
59
LP87322B-Q1, LP87322D-Q1, LP87322E-Q1, LP87322F-Q1
www.ti.com
SNVSAC5 – SEPTEMBER 2017
Product Folder Links: LP87322B-Q1 LP87322D-Q1 LP87322E-Q1 LP87322F-Q1
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
9.2.3 Application Curves
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.
Measurements are done using connections in the Figure 25.
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
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



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