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7440650022 データシート(PDF) 7 Page - Texas Instruments

部品番号 7440650022
部品情報  3.5 V to 36 V Wide-VIN Synchronous 2.1 MHz Step-Down Converters
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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

7440650022 データシート(HTML) 7 Page - Texas Instruments

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7
LM53602, LM53603
www.ti.com
SNVSAR0 – NOVEMBER 2016
Product Folder Links: LM53602 LM53603
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Electrical Characteristics (continued)
Limits apply to the recommended operating junction temperature range of –40°C to 150°C, unless otherwise noted. Minimum
and maximum limits are verified 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(1)
TYP
MAX(1)
UNIT
IZC
Zero-cross current limit
FPWM = 0 V
–0.02
A
INEG
Negative current limit
FPWM = 3.3 V
–1.5
A
Rdson
Power switch on-resistance
High-side MOSFET resistance
135
290
Low-side MOSFET resistance
60
125
FSW
Switching frequency
VIN = 3.8 V to 18 V
1.85
2.1
2.35
MHz
VIN = 36 V
1.2
FSYNC
Synchronizing frequency range
1.9
2.1
2.3
MHz
VCC
Internal VCC voltage
VBIAS = 3.3 V
3.15
V
TSD
Thermal shutdown thresholds
Rising
162
178
°C
Hysteresis, below
18
(1)
This parameter is valid once the input voltage has risen above VIN-operate and the device has started up.
(2)
Includes current into the EN pin, but does not include current due to the external resistive divider in adjustable output versions. See
Input Supply Current section.
7.6 System Characteristics
The following specifications apply only to the typical application circuit, shown in Figure 15 with nominal component values.
Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. The
parameters in this table are not ensured.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN-MIN
Minimum input voltage for Vout to
stay within ±2% of regulation(1)
VOUT = 3.3 V, IOUT = 3 A
3.9
V
VOUT = 3.3 V, IOUT = 1 A
3.55
Regulation
Line Regulation
VOUT = 5 V, VIN = 8 V to 36 V, IOUT = 3 A
7
mV
VOUT = 3.3 V, VIN = 6 V to 36 V, IOUT = 3
A
5
Load Regulation : Auto Mode
VOUT = 5 V, VIN = 12 V, IOUT = 10 µA to 3
A
77
mV
VOUT = 3.3 V, VIN = 12 V, IOUT = 10 µA to
3 A
53
Load Regulation : FPWM Mode
VOUT = 5 V, VIN = 12 V, IOUT = 10 µA to 3
A
12
mV
VOUT = 3.3 V, VIN = 12 V, IOUT = 10 µA to
3 A
9
ISUPPLY
Input supply current when in
regulation(2)
VIN = 13.5 V, VOUT = 3.3 V, IOUT = 0 A
24
µA
VIN = 13.5 V, VOUT = 5 V, IOUT = 0 A
34
VDROP
Dropout voltage (VIN – VOUT)
5-V Option:
VOUT = 4.95 V, IOUT = 3 A, FSW < 1.85
MHz
0.7
V
5-V Option:
VOUT = 5 V, IOUT = 3 A, FSW = 1.85 MHz
1.8
3.3-V Option:
VOUT = 3.27 V, IOUT = 3 A, FSW < 1.85
MHz
0.65
3.3-V Option:
VOUT = 3.3 V, IOUT = 3 A, FSW = 1.85
MHz
1.8


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