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参数资料
| 型号： | LT1934IDCB-1#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 60MA 6DFN |
| 标准包装： | 500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 28 V |
| 输入电压： | 3.2 V ~ 34 V |
| PWM 型： | Burst Mode? |
| 电流 - 输出： | 60mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 6-DFN-EP（2x3） |
LT1934/LT1934-1
Micropower Step-Down
Switching Regulators
in ThinSOT and DFN
FEATURES
DESCRIPTION
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Wide Input Voltage Range: 3.2V to 34V
Micropower Operation: I Q = 12μA
5V at 250mA from 6.5V to 34V Input (LT1934)
5V at 60mA from 6.5V to 34V Input (LT1934-1)
3.3V at 250mA from 4.5V to 34V Input (LT1934)
3.3V at 60mA from 4.5V to 34V Input (LT1934-1)
Low Shutdown Current: <1μA
Low V CESAT Switch: 200mV at 300mA
Low Pro?le (1mm) SOT-23 (ThinSOT?) and
(2mm × 3mm × 0.8mm) 6-Pin DFN Package
The LT ? 1934 is a micropower step-down DC/DC converter
with internal 400mA power switch, packaged in a low
pro?le (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 ef?ciency over a broad range
APPLICATIONS
of load current.
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Wall Transformer Regulation
Automotive Battery Regulation
Standby Power for Portable Products
Distributed Supply Regulation
Industrial Control Supplies
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.
TYPICAL APPLICATION
3.3V Step-Down Converter
Ef?ciency
D2
100
LT1934
V IN = 12V
V IN
4.5V TO 34V
ON OFF
C2
2.2μF
BOOST
V IN
LT1934
SHDN
SW
FB
0.22μF
D1
L1
47μH
10pF 1M
+
V OUT
3.3V
250mA
C1
100μF
90
80
70
V OUT = 5V
V OUT = 3.3V
GND
604k
60
C1: SANYO 4TPB100M
C2: TAIYO YUDEN GMK325BJ225MN
1934 TA01
50
0.1
1
10 100
D1: ON SEMICONDUCTOR MBR0540
D2: CENTRAL CMDSH-3
LOAD CURRENT (mA)
1934 TA02
L1: SUMIDA CDRH4D28-470
1934fe
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| LT1934IS6#TRM | 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: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#TRMPBF | 功能描述:IC REG BUCK ADJ 0.3A SOT23-6 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: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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