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LP3913 데이터시트(PDF) 12 Page - Texas Instruments

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부품명 LP3913
상세설명  Power Management IC for Flash Memory-Based Portable Media Players
PDF  70 Pages
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

LP3913 데이터시트(HTML) 12 Page - Texas Instruments

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LP3913
SNVS489I – NOVEMBER 2006 – REVISED SEPTEMBER 2013
www.ti.com
BUCK2 CONVERTER ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise noted, VIN3 = 3.6V, VOUT = default value, CVIN3 = 10 µF, CSW1 = 10 µF, LSW2 = 2.2 µH Typical values and
limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply over the entire junction
temperature range for operation, 0°C to +125°C. Modulation mode is PWM mode with automatic switch to PFM at light loads.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
IOUT
Continuous Output
600
mA
Current
Peak Output Current
850
1000
1150
mA
Limit
IPFM
Max ILOAD, PFM
75
mA
Mode
IQ
Quiescent Current
IOUT = 0 mA
30
90
µA
Buck2 Disabled
1
FOSC
Internal Oscillator
PWM Mode
2
MHz
Frequency
η
Peak Efficiency
90
%
TON
Turn-on Time
To 95% Level (1)
1
ms
(1)
Specified by design. Not production tested.
BUCK3 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN4 = 3.6V, CVIN4 = 10 µF, CBB = 22 µF, LBB = 2.2 µH Typical values and limits appearing in normal
type apply for TJ = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation,
0°C to +125°C. Modulation mode is PWM mode with automatic switch to PFM at light loads.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIN4
Input Voltage
IOUTMAX = 500 mA
2.7
5.7
V
VOUT Range
Output Voltage
1.80V – 3.30V in 50 mV
1.8
3.3
V
Programming Range
Steps
ΔVOUT
Static Output Voltage
IOUT = 0 mA–500 mA,
Tolerance
Including Line and Load
−4
4
%
Regulation
Line Regulation
IOUT = 10 mA
0.2
%/V
Load Regulation
100 mA < IOUT < 500 mA
0.0016
%/mA
IOUT
Continuous Output
500
mA
Current
Peak Inductor Current VOUT = 3.3V
900
1200
mA
Limit
1A Load at VIN = 2.7V
IPFM
Max ILOAD, PFM
75
mA
Mode
IQ
Quiescent Current
IOUT = 0 mA PFM No
80
Switching
µA
Buck3 Disabled
1
FOSC
Internal Oscillator
PWM Mode
2
MHz
Frequency
η
Peak Efficiency
93
%
TON
Turn-on Time
To 95% Level (1)
1
ms
(1)
Specified by design. Not production tested.
12
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Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: LP3913



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