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LM53625-Q1 データシート(PDF) 7 Page - Texas Instruments

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部品番号 LM53625-Q1
部品情報  Step-Down DC-DC Converter
Download  55 Pages
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

LM53625-Q1 データシート(HTML) 7 Page - Texas Instruments

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LM53625-Q1, LM53635-Q1
www.ti.com
SNVSAA7A – DECEMBER 2015 – REVISED MAY 2016
Product Folder Links: LM53625-Q1 LM53635-Q1
Submit Documentation Feedback
Copyright © 2015–2016, Texas Instruments Incorporated
(1)
This is the current used by the device while not switching, open loop on the ATE. It does not represent the total input current from the
regulator system.
(2)
Ensured by Design, Not tested at production.
7.5 Electrical Characteristics
Limits apply over the recommended operating junction temperature range of –40°C to +150°C, unless otherwise noted.
Minimum and maximum limits are specified through test, design, or statistical correlation. Typical values represent the most
likely parametric norm at Tj = 25°C, and are provided for reference purposes only. Unless otherwise stated the following
conditions apply: VIN = 13.5 V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VFB
Initial output voltage accuracy
VIN = 3.8 V to 36 V, TJ = 25°C
–1%
1%
VIN = 3.8 V to 36 V
–1.5%
1.5%
IQ
Operating quiescent current;
measured at VIN pin when
enabled and not switching(1)
VIN = 13.5 V, VBIAS = 5 V
6
µA
VIN = 13.5 V, VBIAS = 5 V, TJ = 85°C
16
IB
Bias current into BIAS pin,
enabled, not switching
VIN = 13.5 V, VBIAS = 5 V, FPWM =
0 V
35
µA
VIN = 13.5 V, VBIAS = 3.3 V, FPWM
= 0 V
35
ISD
Shutdown quiescent current;
measured at VIN pin
EN
≤ 0.4 V, TJ = 25°C
2
µA
EN
≤ 0.4 V, TJ = 85°C
3
EN
≤ 0.4V, TJ = 150°C
5
VIN-OPERATE
Minimum input voltage to operate
Rising
3.2
3.55
3.95
V
Falling
2.95
3.25
3.55
Hysteresis
0.28
0.3
0.4
VRESET
RESET upper threshold voltage
Rising, % of VOUT
105%
107%
110%
RESET lower threshold voltage
Falling, % VOUT
92%
94%
96.5%
Magnitude of RESET lower
threshold from steady state
output voltage
Steady-state output voltage and
RESET threshold read at the same
TJ and VIN
96%
VRESET_HYST
RESET hysteresis as a percent of
output voltage setpoint
±1
VRESET_VALID
Minimum input voltage for proper
RESET function
50-µA pullup to RESET pin, EN = 0
V, TJ= 25°C
1.5
V
VOL
Low level RESET function output
voltage
50-µA pullup to RESET pin, VIN =1.5
V, EN = 0 V
0.4
V
0.5-mA pullup to RESET pin, VIN
=13.5 V, EN=0 V
0.4
1-mA pullup to RESET pin, VIN
=13.5 V, EN=3.3 V
0.4
FSW
Switching frequency
VIN = 13.5 V, center frequency with
spread spectrum, PWM operation
1.85
2.1
2.35
MHz
VIN = 13.5 V, without spread
spectrum, PWM operation
1.85
2.1
2.35
FSYNC
Sync frequency range
1.9
2.1
2.3
MHz
DSYNC
Sync input duty cycle range
High state input < 5.5 V and > 2.3 V
25%
75%
VFPWM
FPWM input threshold voltage
FPWM input high (MODE = FPWM)
1.5
V
FPWM input low (MODE = AUTO
with diode emulation)
0.4
FPWM input hysteresis
0.15
1
FSSS
Frequency span of spread
spectrum operation
±3%
FPSS
Spread-spectrum pattern
frequency(2)
9
Hz
FSW-SS
Switching Frequency while in
spread spectrum
VIN = 13.5 V, PWM operation
1.81
MHz


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