參數(shù)資料
型號(hào)： LTC3803ES6-3
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 1 A SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO6
封裝： 1 MM HEIGHT, PLASTIC, MO-193, TSOT-23, 6 PIN
文件頁(yè)數(shù)： 1/16頁(yè)
文件大小： 165K
代理商： LTC3803ES6-3
1
LTC3803-3
38033fa
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
Constant Frequency
Current Mode Flyback
DC/DC Controller in ThinSOT
■
VIN and VOUT Limited Only by External Components
■
Adjustable Slope Compensation
■
Internal Soft-Start
■
–40
°C to 125°C Operating Temperature Range
■
Constant Frequency 300kHz Operation
■
±1.5% Reference Accuracy
■
Current Mode Operation for Excellent Line and Load
Transient Response
■
No Minimum Load Requirement
■
Low Quiescent Current: 240
μA
■
Low Profile (1mm) SOT-23 Package
■
Telecom Power Supplies
■
42V and 12V Automotive Power Supplies
■
Auxiliary/Housekeeping Power Supplies
■
Power Over Ethernet Powered Devices
5V Output Nonisolated Telecom Housekeeping Power Supply
The LTC
3803-3 is a constant frequency current mode
flyback controller optimized for driving 6V-rated N-channel
MOSFETs in high input voltage applications. Constant
frequency operation is maintained down to very light
loads, resulting in less low frequency noise generation
over a wide range of load currents. Slope compensation
can be programmed with an external resistor.
The LTC3803-3 provides
±1.5% output voltage accuracy
and consumes only 240
μA of quiescent current. Ground-
referenced current sensing allows LTC3803-3-based con-
verters to accept input supplies beyond the LTC3803-3’s
absolute maximum VCC. A micropower hysteretic start-up
feature allows efficient operation at high input voltages.
For simplicity, the LTC3803-3 can also be powered from
a high VIN through a resistor, due to its internal 9.4V shunt
regulator. An internal undervoltage lockout shuts down
the LTC3803-3 when the input voltage falls below 4.4V,
guaranteeing at least 4.4V of gate drive to the external
MOSFET.
The LTC3803-3 is available in a low profile (1mm) 6-lead
SOT-23 (ThinSOT
TM) package.
VCC
ITH/RUN
LTC3803-3
GND
NGATE
SENSE
VFB
UPS840
300
μF*
6.3V
X5R
1
μF
100V
X5R
150pF
200V
1
μF
10V
X5R
VOUT
5V
2A MAX
38033 TA01
68m
Ω
220
Ω
20k
10k
82k
470pF
105k
4.7k
FDC2512
T1: COOPER CTX02-15242
*THREE 100
μF UNITS IN PARALLEL
T1
VIN
36V TO 72V
Efficiency vs Load Current
LOAD CURRENT (mA)
250
50
EFFICIENCY
(%)
55
65
70
75
100
85
750
1250 1500
38033 TA02
60
90
95
80
500
1000
1750 2000
VIN = 36V
VIN = 48V
VIN = 60V
VIN = 72V
VOUT = 5V
, 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.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3803ES6-3#PBF 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Sync Flyback 6-Pin TSOT-23 Bulk 制造商:Linear Technology 功能描述:DC/DC CONTRLER FLYBACK 300KH 制造商:Linear Technology 功能描述:DC/DC CONTRLER, FLYBACK, 300KHZ, 6SOT23
LTC3803ES6-3#TRMPBF 功能描述:IC REG CTRLR FLYBK PWM TSOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC3803ES6-3#TRPBF 功能描述:IC REG CTRLR FLYBK PWM TSOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC3803ES6-5 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Sync Flyback 5V Input 6-Pin TSOT-23
LTC3803ES6-5#PBF 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Sync Flyback 5V Input 6-Pin TSOT-23 Bulk
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