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| 型号： | LT1934IDCB-1 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.49 A SWITCHING REGULATOR, PDSO6 |
| 封装： | 2 X 3 MM, 0.80 MM HEIGHT, PLASTIC, MO-229, DFN-6 |
| 文件页数： | 1/20页 |
| 文件大小： | 234K |
| 代理商： | LT1934IDCB-1 |
LT1934/LT1934-1
1
1934fe
TYPICAL APPLICATION
DESCRIPTION
Micropower Step-Down
Switching Regulators
in ThinSOT and DFN
The LT1934 is a micropower step-down DC/DC converter
with internal 400mA power switch, packaged in a low
prole (1mm) ThinSOT. With its wide input range of 3.2V
to 34V, the LT1934 can regulate a wide variety of power
sources, from 4-cell alkaline batteries and 5V logic rails
to unregulated wall transformers and lead-acid batteries.
Quiescent current is just 12μA and a zero current shut-
down mode disconnects the load from the input source,
simplifying power management in battery-powered sys-
tems. Burst Mode operation and the low drop internal
power switch result in high efciency over a broad range
of load current.
The LT1934 provides up to 300mA of output current. The
LT1934-1 has a lower current limit, allowing optimum
choice of external components when the required output
current is less than 60mA. Fast current limiting protects
the LT1934 and external components against shorted
outputs, even at 34V input.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
FEATURES
APPLICATIONS
n Wide Input Voltage Range: 3.2V to 34V
n Micropower Operation: IQ = 12μA
n 5V at 250mA from 6.5V to 34V Input (LT1934)
n 5V at 60mA from 6.5V to 34V Input (LT1934-1)
n 3.3V at 250mA from 4.5V to 34V Input (LT1934)
n 3.3V at 60mA from 4.5V to 34V Input (LT1934-1)
n Low Shutdown Current: <1μA
n Low VCESAT Switch: 200mV at 300mA
n Low Prole (1mm) SOT-23 (ThinSOT) and
(2mm
× 3mm × 0.8mm) 6-Pin DFN Package
n Wall Transformer Regulation
n Automotive Battery Regulation
n Standby Power for Portable Products
n Distributed Supply Regulation
n Industrial Control Supplies
3.3V Step-Down Converter
Efciency
BOOST
VIN
LT1934
SHDN
1934 TA01
C2
2.2μF
0.22μF
10pF
C1: SANYO 4TPB100M
C2: TAIYO YUDEN GMK325BJ225MN
D1: ON SEMICONDUCTOR MBR0540
D2: CENTRAL CMDSH-3
L1: SUMIDA CDRH4D28-470
VOUT
3.3V
250mA
D2
604k
1M
L1
47μH
D1
VIN
4.5V TO 34V
ON OFF
SW
FB
GND
C1
100μF
+
LOAD CURRENT (mA)
60
EFFICIENCY
(%)
70
80
90
100
0.1
10
100
1934 TA02
50
1
LT1934
VIN = 12V
VOUT = 5V
VOUT = 3.3V
相关PDF资料 |
PDF描述 |
|---|---|
| LT1934IDCB | 0.49 A SWITCHING REGULATOR, PDSO6 |
| LT1934IS6#TR | 0.49 A SWITCHING REGULATOR, PDSO6 |
| LT1934IS6-1#PBF | 0.16 A SWITCHING REGULATOR, PDSO6 |
| LT1938IDD#PBF | 4 A SWITCHING REGULATOR, 3300 kHz SWITCHING FREQ-MAX, PDSO10 |
| LT1956-5EGN | 3 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1934IDCB-1#TRMPBF | 功能描述:IC REG BUCK ADJ 60MA 6DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT1934IDCB-1#TRPBF | 功能描述:IC REG BUCK ADJ 60MA 6DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT1934IS6 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Step-Down Switching Regulators in ThinSOT |
| LT1934IS6#PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 3.2V to 34V 6-Pin TSOT-23 制造商:Linear Technology 功能描述:SP-SWREG/Monolithic, Cut Tape 300mA (Iout), Micropower Step-Down |
| LT1934IS6#TR | 功能描述:IC REG BUCK ADJ 0.3A SOT23-6 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
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