Datasheet SD8942 (Shouding)
| 制造商 | Shouding |
| 描述 | 600 KHz, 16 V, 2A Synchronous Step-Down Converter in SOT23-6 package |
| 页数 / 页 | 7 / 1 — 600KHz, 16V. 2A Synchronous. Step-Down Converter. 100kΩ. 15kΩ. 110kΩ. … |
| 文件格式/大小 | PDF / 959 Kb |
| 文件语言 | 英语 |
600KHz, 16V. 2A Synchronous. Step-Down Converter. 100kΩ. 15kΩ. 110kΩ. GND. INPUT. 10μF/25V. CERAMIC. 22μF/6.3V. 22nF. L1 4.7μH. 5V/2A. OUTPUT
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SD8942
600KHz, 16V
，
2A Synchronous Step-Down Converter
GENERAL DESCRIPTION FEATURES The SD8942 is a fully i synchronous rectifi ntegrated, high– ef iciency 2A 4.5V to 16V Input Voltage Range ed step-down converter. The * 600KHzFrequencyOperation SD * 8942 operates at high efficiency over a wide output 2A Output Current c urrent lo ad range. * No Schot ky Diode R equired T * his device offers tw o operation modes, PWM control High Ef iciency: Up to 96% * and PFM Mode switching contr ol, which allows a high 0.6V Reference ef * ficiency over the wider range of th e load. Slope Compensate d Current Mode Control for The SD * 8942 requir es a minimum number of readily Excellent Line and Load Transient Response available standard external components and is Integrated internal compensation available i n an 6-pin SOT23 ROHS compliant pac kage. Stable with Low ESR Ceramic Output ** Capaci tors APPLICATIONS Over Current Protection with Hiccup-Mode APPLICATIONS * Ther mal Shutdown Wireless and DSL Modems * Inrush Current Limit and Soft Start * Notebook Computer * * -40°C to +85°C Temperature Range Distributed Power Systems * * Digital Set Top Boxes * Flat Panel Television and Monitors * TYPICAL APPLICATION TYPICAL APPLICATION
EN FB
4 3
R3 R2 R1 100kΩ 15kΩ 110kΩ IN GND 1% 1% INPUT
5 SD8942 2
C1 10μF/25V SW BS CERAMIC C2
6 1
22μF/6.3V C3 CERAMIC 22nF X2 L1 4.7μH 5V/2A OUTPUT
Figure 1. Basic Application Circuit ABSOLUTE MAXIMUM RATINGS(Note1) ABSOLUTE MAXIMUM RATINGS Input Supply Voltage ……….… -0.3V to 17V Operating Temperature Range … -40°C to +85°C EN,FB Voltages …………….…-0.3 to 6V Lead Temperature(Soldering,10s) ….…. +300°C SW Voltage ……..……-0.3V to (Vin+0.5V) Storage Temperature Range ….…-65°C to 150°C BS Voltage ……….. (Vsw-0.3) to (Vsw+5V) www.shouding.net 1
600KHz, 16V
，
2A Synchronous Step-Down Converter
GENERAL DESCRIPTION FEATURES The SD8942 is a fully i synchronous rectifi ntegrated, high– ef iciency 2A 4.5V to 16V Input Voltage Range ed step-down converter. The * 600KHzFrequencyOperation SD * 8942 operates at high efficiency over a wide output 2A Output Current c urrent lo ad range. * No Schot ky Diode R equired T * his device offers tw o operation modes, PWM control High Ef iciency: Up to 96% * and PFM Mode switching contr ol, which allows a high 0.6V Reference ef * ficiency over the wider range of th e load. Slope Compensate d Current Mode Control for The SD * 8942 requir es a minimum number of readily Excellent Line and Load Transient Response available standard external components and is Integrated internal compensation available i n an 6-pin SOT23 ROHS compliant pac kage. Stable with Low ESR Ceramic Output ** Capaci tors APPLICATIONS Over Current Protection with Hiccup-Mode APPLICATIONS * Ther mal Shutdown Wireless and DSL Modems * Inrush Current Limit and Soft Start * Notebook Computer * * -40°C to +85°C Temperature Range Distributed Power Systems * * Digital Set Top Boxes * Flat Panel Television and Monitors * TYPICAL APPLICATION TYPICAL APPLICATION
EN FB
4 3
R3 R2 R1 100kΩ 15kΩ 110kΩ IN GND 1% 1% INPUT
5 SD8942 2
C1 10μF/25V SW BS CERAMIC C2
6 1
22μF/6.3V C3 CERAMIC 22nF X2 L1 4.7μH 5V/2A OUTPUT
Figure 1. Basic Application Circuit ABSOLUTE MAXIMUM RATINGS(Note1) ABSOLUTE MAXIMUM RATINGS Input Supply Voltage ……….… -0.3V to 17V Operating Temperature Range … -40°C to +85°C EN,FB Voltages …………….…-0.3 to 6V Lead Temperature(Soldering,10s) ….…. +300°C SW Voltage ……..……-0.3V to (Vin+0.5V) Storage Temperature Range ….…-65°C to 150°C BS Voltage ……….. (Vsw-0.3) to (Vsw+5V) www.shouding.net 1