Low

LTC1700EMS#PBF - 

直流/直流控制器, 电流模式, 900mV至5V, 1路输出, 同步升压, 680kHz, MSOP-10

LINEAR TECHNOLOGY LTC1700EMS#PBF

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制造商产品编号:
LTC1700EMS#PBF
库存编号
1663669
技术数据表:
(EN)
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产品信息

:
10引脚
:
680kHz
:
900mV
:
剪切带
:
85°C
:
-
:
5V
:
92%
:
-
:
1输出
:
同步升压 (升压)
:
-40°C
:
MSOP
:
MSL 1 -无限制
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产品概述

The LTC1700EMS#PBF is a current-mode synchronous step-up DC/DC Controller drives external N-channel and P-channel power MOSFETs using a constant frequency PWM architecture. Current limiting is provided by sensing the voltage drop across the main MOSFET, eliminating the need of a sense resistor. This No RSENSE technique helps the LTC1700 maintain high efficiency at heavy loads while Burst Mode operation ensures high efficiency at light loads, thus providing high efficiencies over a wide range of load currents. It operates at a minimum input voltage as low as 0.9V. The device boasts a ±1.5% output voltage accuracy and consumes only 200µA of quiescent current. In shutdown, it only draws 10µA. To prevent inductor current runaway, the duty cycle is limited to 90%. Overvoltage protection is also provided which shuts both the external MOSFETs off when tripped. High constant operating frequency of 530kHz allows the use of small inductors and output capacitors.
  • No current sense resistor required
  • OPTI-LOOP® Compensation minimizes COUT
  • Selectable Burst Mode® operation
  • Current mode operation for excellent line and load transient response
  • Soft-start reduces supply current transients
  • 1.5% Output voltage accuracy
  • Uses low value, small size, surface mount inductors

应用

无线, 通信与网络, 消费电子产品, 便携式器材, 电源管理, 射频通信

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