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參數(shù)資料
| 型號： | LT3682IDD#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO12 |
| 封裝： | 3 X 3 MM, LEAD FREE, PLASTIC, DFN-12 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 253K |
| 代理商： | LT3682IDD#TRPBF |
LT3682
1
3682f
TYPICAL APPLICATION
DESCRIPTION
1A Micropower Step-Down
Switching Regulator
The LT
3682 is an adjustable frequency (250kHz to
2.2MHz) monolithic buck switching regulator that accepts
input voltages up to 36V. A high efciency 0.5Ω switch is
included on the device along with a boost diode and the
necessary oscillator, control, and logic circuitry. Current
mode topology is used for fast transient response and good
loop stability. A SYNC pin allows the user to synchronize the
part to an external clock, and to choose between Low Ripple
Burst Mode operation and standard PWM operation.
The Low Ripple Burst Mode maintains high efciency at
low output currents while keeping output ripple below
15mV in typical applications. Shutdown reduces input
supply current to less than 1μA while a resistor and
capacitor on the RUN/SS pin provide a controlled output
voltage ramp (soft-start). A power good ag signals when
VOUT reaches 90% of the programmed output voltage.
Protection circuitry senses the current in the power switch
and external Schottky catch diode to protect the LT3682
against short-circuit conditions. Frequency foldback and
thermal shutdown provide additional protection.
The LT3682 is available in a 12-Pin 3mm
× 3mm DFN with
exposed pad for low thermal resistance.
5V Step-Down Converter
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Burst Mode
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
FEATURES
APPLICATIONS
n Automotive Battery Regulation
n Automotive Entertainment Systems
n Industrial Supplies
n Power for Portable Products
n Distributed Supply Regulation
n Wide Input Range:
Operation from 3.6V to 36V
Overvoltage Lockout Protects Circuits through
60V Transients
n 1A Output Current
n Low Ripple Burst Mode
Operation
IQ = 75μA at 12VIN to 3.3VOUT
Output Ripple < 15mVP-P
n Adjustable Switching Frequency: 250kHz to 2.2MHz
n Short-Circuit Protected
n Synchronizable Between 300kHz and 2.2MHz
n 0.8V Feedback Reference Voltage
n Output Voltage 0.8V to 20V
n Soft-Start Capability
n Power Good Flag
n Small 12-Pin Thermally Enhanced 3mm
× 3mm
DFN Package
Efciency
VIN
6.9V TO 36V
TRANSIENT TO 60V
VOUT
5V
0.9A, VIN 6.9V
1A, VIN 12V
2.2μF
16.2k
40.2k
470pF
102k
10μF
536k
0.22μF
10μH
3682 TA01
OFF
ON
VIN
BD
GND
PGND
LT3682
RUN/SS
VC
RT
SYNC
PG
BOOST
SW
DA
FB
f = 800kHz
LOAD CURRENT (A)
0
50
EFFICIENCY
(%)
60
70
80
90
100
0.2
0.4
0.6
0.8
1
VOUT = 5V
VOUT = 3.3V
VIN = 12V
L = 10H
f = 800 kHz
3682 TA01b
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| LT3684EDD#PBF | 功能描述:IC REG BUCK ADJ 2A 10DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LT3684EDD#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER BUCK 2.8MHZ 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, 2.8MHZ, DFN-10 |
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