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LM76003QRNPTQ1 データシート(PDF) 8 Page - Texas Instruments

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部品番号 LM76003QRNPTQ1
部品情報  3.5-V to 60-V, 2.5-A/3.5-A Synchronous Step-Down Voltage Regulator
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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

LM76003QRNPTQ1 データシート(HTML) 8 Page - Texas Instruments

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LM76002-Q1, LM76003-Q1
SNVSAU3 – DECEMBER 2017
www.ti.com
Product Folder Links: LM76002-Q1 LM76003-Q1
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Copyright © 2017, Texas Instruments Incorporated
(1)
Ensured by design.
6.6 Timing Characteristics
MIN
NOM
MAX
UNIT
CURRENT LIMITS AND HICCUP
NOC
(1)
Number of switching cycles
before hiccup is tripped
128
Cycles
tOC
Overcurrent hiccup retry delay
time
46
ms
SOFT START (SS/TRK PIN)
tSS
Internal soft-start time
CSS = OPEN, from EN rising
edge to PGOOD rising edge
3.5
6.3
ms
POWER GOOD (PGOOD PIN) and OVERVOLTAGE PROTECTION
tPGOOD_RISE
PGOOD rising edge deglitch
delay
80
140
200
µs
tPGOOD_FALL
PGOOD falling edge deglitch
delay
80
140
200
µs
6.7 Switching Characteristics
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PWM LIMITS (SW PINS)
tON-MIN
Minimum switch on-time
65
95
ns
tOFF-MIN
Minimum switch off-time
95
130
ns
tON-MAX
Maximum switch on-time
HS timeout in dropout
3.8
8
11.4
µs
OSCILLATOR (RT and SYNC PINS)
fOSC
Internal oscillator frequency
RT = Open
440
500
560
kHz
fADJ
Minimum adjustable frequency by
RT or SYNC
RT =133 kΩ, 0.1%
270
300
330
kHz
Maximum adjustable frequency by
RT or SYNC
RT = 17.4 kΩ, 0.1%
1980
2200
2420
VSYNC_HIGH
Sync input high level threshold
2
V
VSYNC_LOW
Sync input low level threshold
0.4
V
VMODE_HIGH
Mode input high level threshold for
FPWM
0.42
V
VMODE_LOW
Mode input low level threshold for
AUTO mode
0.4
V
tSYNC_MIN
Sync input minimum on- and off-
time
80
ns


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