LM2705

現行

具 150mA 峰值電流限制的微功耗升壓 DC/DC 轉換器

立即訂購

產品規格表

document-pdfAcrobat LM2705 Micropower Step-Up DC-DC Converter With 150-mA Peak Current Limit datasheet (Rev. F) (英文) PDF | HTML

LM2705

現行

產品規格表

立即訂購

產品詳細資料

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Boost

Type

Converter

Vin (min) (V)

2.2

Vin (max) (V)

7

Switching frequency (min) (kHz)

600

Switching frequency (max) (kHz)

2500

Features

Enable, Nonsynchronous rectification

Vout (min) (V)

1.24

Vout (max) (V)

20

Iq (typ) (µA)

235

Duty cycle (max) (%)

76

Switch current limit (typ) (A)

0.15

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Boost

Type

Converter

Vin (min) (V)

2.2

Vin (max) (V)

7

Switching frequency (min) (kHz)

600

Switching frequency (max) (kHz)

2500

Features

Enable, Nonsynchronous rectification

Vout (min) (V)

1.24

Vout (max) (V)

20

Iq (typ) (µA)

235

Duty cycle (max) (%)

76

Switch current limit (typ) (A)

0.15

SOT-23 (DBV)

5

8.12 mm² 2.9 x 2.8

2.2-V to 7-V Input Range
150-mA, 0.7-Ω Internal Switch
Adjustable Output Voltage up to 20 V
Input Undervoltage Lockout
0.01-µA Shutdown Current
Uses Small Surface-Mount Components
Small 5-Pin SOT-23 Package

2.2-V to 7-V Input Range
150-mA, 0.7-Ω Internal Switch
Adjustable Output Voltage up to 20 V
Input Undervoltage Lockout
0.01-µA Shutdown Current
Uses Small Surface-Mount Components
Small 5-Pin SOT-23 Package

The LM2705 is a micropower step-up DC-DC converter in a small 5-pin SOT-23 package. A current-limited, fixed-off-time control scheme conserves operating current, which results in high efficiency over a wide range of load conditions. The 21-V switch allows for output voltages as high as 20 V. The low 400-ns off-time permits the use of tiny, low-profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications. The LM2705 is ideal for LCD panels requiring low current and high efficiency as well as white-LED applications for cellular phone back-lighting. The LM2705 device can drive up to 3 white LEDs from a single Li-Ion battery. The low peak-inductor current of the LM2705 makes it ideal for USB applications.

For all available packages, see the orderable addendum at the end of the data sheet.

The LM2705 is a micropower step-up DC-DC converter in a small 5-pin SOT-23 package. A current-limited, fixed-off-time control scheme conserves operating current, which results in high efficiency over a wide range of load conditions. The 21-V switch allows for output voltages as high as 20 V. The low 400-ns off-time permits the use of tiny, low-profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications. The LM2705 is ideal for LCD panels requiring low current and high efficiency as well as white-LED applications for cellular phone back-lighting. The LM2705 device can drive up to 3 white LEDs from a single Li-Ion battery. The low peak-inductor current of the LM2705 makes it ideal for USB applications.

For all available packages, see the orderable addendum at the end of the data sheet.

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