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LM10506 データシート(PDF) 8 Page - Texas Instruments

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部品番号 LM10506
部品情報  Triple Buck LDO Power Management Unit
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
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LM10506 データシート(HTML) 8 Page - Texas Instruments

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LM10506
SNVS729F – SEPTEMBER 2011 – REVISED AUGUST 2014
www.ti.com
Buck 2 Electrical Characteristics
(1)(2)(3) (continued)
Unless otherwise noted, VIN = 5 V where: VIN = VVIN_B1 = VVIN_B2 = VVIN_B3. Limits apply for TJ = 25°C, unless otherwise noted.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CIN
Input capacitor (5)
4.7
µF
Output filter capacitor
10
10
100
(5)
COUT
0 mA
≤ IOUT ≤ 400 mA
Output capacitor ESR (5)
20
m
L
Output filter inductance (5)
2.2
µH
3.3 V
≤ VIN ≤ 5 V, IOUT = 400
DC line regulation (5)
0.5
%/V
mA
ΔVOUT
DC load regulation (5)
100 mA
≤ IOUT ≤ 400 mA
0.3
%/A
IFB
Feedback pin input bias current
VFB = 1.8 V
1.8
5(4)
µA
135
RDS-ON-HS
High side switch on resistance
VIN = 2.6 V
260
m
RDS-ON-LS
Low side switch on resistance
85
190(4)
STARTUP
Startup from shutdown, VOUT
= 0V, no load, LC =
Internal soft-start (turn on time)
TSTART
recommended circuit, using
0.1
ms
(5)
software enable, to VOUT =
95% of final value
7.8 Buck 3 Electrical Characteristics
(1) (2) (3)
Unless otherwise noted, VIN = 5 V where: VIN = VVIN_B1 = VVIN_B2 = VVIN_B3. Limits apply for TJ = 25°C, unless otherwise noted.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IQ
DC bias current in VIN
No Load, PFM Mode
15
50(4)
µA
Buck 3 enabled, switching in
IPEAK
Peak switching current limit
0.9(4)
1.2
1.7(4)
A
PWM
η
Efficiency peak, Buck 3 (5)
IOUT = 0.3 A
90%
ƒSW
Switching frequency
1.75(4)
2
2.3(4)
MHz
CIN
Input Capacitor (5)
4.7
µF
Output Filter Capacitor (5)
10
10
100
COUT
0 mA
≤ IOUT ≤ 600 mA
Output Capacitor ESR (5)
20
m
L
Output Filter Inductance (5)
2.2
µH
DC Line regulation (5)
3.3 V
≤ VIN ≤ 5 V, IOUT = 600 mA
0.5
%/V
ΔVOUT
DC Load regulation (5)
150 mA
≤ IOUT ≤ 600 mA
0.3
%/A
Feedback pin input bias
IFB
VFB = 1.2 V
0.9
5(4)
µA
current
135
High Side Switch On
RDS-ON-HS
Resistance
VIN = 2.6 V
260
m
Low Side Switch On
RDS-ON-LS
85
190(4)
Resistance
STARTUP
Startup from shutdown, VOUT = 0
Internal soft-start (turn on
V, no load, LC = recommended
TSTART
0.1
ms
time) (5)
circuit, using software enable, to
VOUT = 95% of final value
(1)
All limits are ensured by design, test and/or statistical analysis. All electrical characteristics having room-temperature limits are tested
during production with TJ = 25°C. All hot and cold limits are ensured by correlating the electrical characteristics to process and
temperature variations and applying statistical process control.
(2)
Capacitors: Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) are used in setting electrical characteristics.
(3)
BUCK normal operation is ensured if VIN ≥ VOUT+1 V.
(4)
Limits apply over the entire operating junction temperature range of
−40°C ≤ TA = TJ ≤ 85°C.
(5)
Specification ensured by design. Not tested during production.
8
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