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LM3475MF 数据表(PDF) 5 Page - Texas Instruments

部件名 LM3475MF
功能描述  Hysteretic PFET Buck Controller
Download  25 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM3475MF 数据表(HTML) 5 Page - Texas Instruments

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LM3475
www.ti.com
SNVS239C – OCTOBER 2004 – REVISED OCTOBER 2015
6.5 Electrical Characteristics
Typical limits are for TJ = 25°C, unless otherwise specified, VIN = EN = 5.0 V. Maximum and minimum specification limits are
specified by design, test, or statistical analysis.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IQ
Quiescent current
EN = VIN (PGATE
TJ = 25°C
260
Open)
TJ = −40°C to +125°C
170
320
µA
EN = 0V
TJ = 25°C
7
TJ = −40°C to +125°C
4
10
VFB
TJ = 25°C
0.8
Feedback voltage
V
TJ = −40°C to +125°C
0.788
0.812
%
ΔVFB/ΔVIN
Feedback voltage line
2.7 V < VIN < 10 V
0.01
%/V
regulation
VHYST
Comparator hysteresis
2.7 V < VIN < 10 V
TJ = 25°C
21
28
mV
−40°C to +125°C
21
32
IFB
FB bias current
TJ = 25°C
50
nA
−40°C to +125°C
600
Enable threshold
Increasing
TJ = 25°C
1.5
V
voltage
VthEN
−40°C to +125°C
1.2
1.8
Hysteresis
365
mV
IEN
Enable leakage current
TJ = 25°C
0.025
EN = 10 V
µA
−40°C to +125°C
1
Source
2.8
ISOURCE = 100 mA
RPGATE
Driver resistance
Ω
Sink
1.8
ISink = 100 mA
Source
VPGATE = 3.5 V
0.475
CPGATE = 1 nF
IPGATE
Driver output current
A
Sink
VPGATE = 3.5 V
1.0
CPGATE = 1 nF
TSS
Soft-start time
2.7 V < VIN < 10 V (EN Rising)
4
ms
TONMIN
Minimum on-time
PGATE Open
180
ns
VUVD
Undervoltage detection
Measured at the FB
TJ = 25°C
0.56
V
Pin
−40°C to +125°C
0.487
0.613
Copyright © 2004–2015, Texas Instruments Incorporated
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