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LM46000A-Q1 bảng dữ liệu(PDF) 7 Page - Texas Instruments

tên linh kiện LM46000A-Q1
Giải thích chi tiết về linh kiện  3.5-V to 60-V, 0.5-A Synchronous Step-Down Voltage Converter
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nhà sản xuất  TI1 [Texas Instruments]
Trang chủ  http://www.ti.com
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LM46000A-Q1 bảng dữ liệu(HTML) 7 Page - Texas Instruments

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LM46000-Q1
www.ti.com
SNVSAA1B – JULY 2015 – REVISED NOVEMBER 2017
Product Folder Links: LM46000-Q1
Submit Documentation Feedback
Copyright © 2015–2017, Texas Instruments Incorporated
(1)
Ensured by design.
6.7 Switching Characteristics
Limits apply over the recommended operating junction temperature (TJ) range of –40°C to +125°C, unless otherwise stated.
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 = 24 V, VOUT = 3.3 V, FS = 500 kHz.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SW (SW PIN)
tON-MIN
(1)
Minimum high side MOSFET ON-
time
125
165
ns
tOFF-MIN
(1)
Minimum high side MOSFET OFF-
time
200
250
ns
OSCILLATOR (SW PINS AND SYNC PIN)
FOSC-
DEFAULT
Oscillator default frequency
RT pin open circuit
445
500
570
kHz
FADJ
Minimum adjustable frequency
With 1% resistors at RT pin
200
kHz
Maximum adjustable frequency
2200
kHz
Frequency adjust accuracy
10%
VSYNC-HIGH Sync clock high level threshold
2
V
VSYNC-LOW Sync clock low level threshold
0.4
V
DSYNC-MAX Sync clock maximum duty cycle
90%
DSYNC-MIN
Sync clock minimum duty cycle
10%
TSYNC-MIN
Minimum sync clock ON- and OFF-
time
80
ns


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