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參數資料
| 型號： | LT3493EDCB-3#TRM |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | 2.2 A SWITCHING REGULATOR, 815 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 2 X 3 MM, PLASTIC, MO-229, DFN-6 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 401K |
| 代理商： | LT3493EDCB-3#TRM |
1
LT3493-3
3493-3f
APPLICATIO S
U
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
1.2A, 750kHz Step-Down
Switching Regulator in
2mm
× 3mm DFN
The LT
3493-3 is a current mode PWM step-down DC/DC
converter with an internal 1.75A power switch. The wide
operating input range of 6.8V to 36V (40V maximum) makes
the LT3493-3 ideal for regulating power from a wide vari-
ety of sources, including unregulated wall transformers,
24V industrial supplies and automotive batteries. Its high
operating frequency allows the use of tiny, low cost induc-
tors and ceramic capacitors, resulting in low, predictable
output ripple.
Cycle-by-cycle current limit provides protection against
shorted outputs and soft-start eliminates input current
surge during start-up. The low current (<2
A) shutdown
mode provides output disconnect, enabling easy power
management in battery-powered systems.
■
Wide Input Range: 6.8V to 36V Operating,
40V Maximum
■ 1.2A Output Current
■
Fixed Frequency Operation: 750kHz
■ Output Adjustable Down to 780mV
■ Short-Circuit Robust
■
Uses Tiny Capacitors and Inductors
■ Soft-Start
■ Internally Compensated
■
Low Shutdown Current: <2
A
■ Low VCESAT Switch: 330mV at 1A
■ Thermally Enhanced, Low Profile 2mm
× 3mm
DFN-6 Package
■ Automotive Battery Regulation
■ Industrial Control Supplies
■
Wall Transformer Regulation
■ Distributed Supply Regulation
■ Battery-Powered Equipment
3.3V Step-Down Converter
Efficiency
VIN
6.8V TO 36V
ON OFF
0.1
F
10
H
32.4k
10
F
3493-3 TA01a
22pF
1
F
10k
VOUT
3.3V
1.2A, VIN > 12V
1.1A, VIN > 8V
VIN
BOOST
GND
FB
SHDN
SW
LT3493-3
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
LOAD CURRENT (A)
EFFICIENCY
(%)
70
80
3493-3 TA01b
60
50
0.4
0.8
1.2
0.2
0
0.6
1.0
90
65
75
55
85
VIN = 12V
VOUT = 3.3V
L = 10
H
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LT3493EDCBPBF | 制造商:LT 功能描述:Pb Free |
| LT3493EDCB-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.2A, 750kHz Step-Down Switching Regulator in 2mm × 3mm DFN |
| LT3493EDCB-TR | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.2A, 750kHz Step-Down Switching Regulator in 2mm × 3mm DFN |
| LT3493EDCBTRMPBF | 制造商:Linear Technology 功能描述:Sw. Regulator 1.2A 750kHz Step-Down DFN6 |
| LT3493EDCB-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.2A, 750kHz Step-Down Switching Regulator in 2mm × 3mm DFN |
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