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参数资料
| 型号： | MIC4744YTSE |
| 厂商： | Micrel Inc |
| 文件页数： | 3/23页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 2A DL 16TSSOP |
| 标准包装： | 94 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 可调至 0.6V |
| 输入电压： | 2.9 V ~ 5.5 V |
| 频率 - 开关： | 4MHz |
| 电流 - 输出： | 2A |
| 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： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-EPAD TSSOP |
| 产品目录页面： | 1093 (CN2011-ZH PDF) |
| 其它名称： | 576-3357-5 |
Micrel, Inc.
Pin Description
MIC4744
(MLF )
Pin Number
?
1
Pin Number
(EPAD-TSSOP)
7
Pin Name
FB2
Pin Function
Feedback for output 2 (Input). Input to the error amplifier, connect to the
external resistor divider network to set the output voltage.
2 (1)
8 (1)
EN2
Enable for output 2 (Input). Logic level low, will shutdown the device, reducing
the current draw to less than 5μA (both EN1 and EN2 are low).
3,4
5
9,10
11
SW2
PGND2
Switch for output 2 (Output): Internal power P-Channel MOSFET output switch
Power Ground for output 2. Provides the ground return path for the high-side
drive current.
PGND1 pin and PGND2 pin are internally connected by anti-parallel diodes.
6,15
5,12
VIN2
Supply Voltage for output 2 (Input): Supply voltage for the source of the
internal P-Channel MOSFET and driver. Requires bypass capacitor to GND.
VIN1 pins and VIN2 pins are internally connected by anti-parallel diodes.
7,14
4,13
VIN1
Supply Voltage for output 1 (Input): Supply voltage for the source of the
internal P-Channel MOSFET and driver. Requires bypass capacitor to GND.
VIN1 pins and VIN2 pins are internally connected by anti-parallel diodes.
8
14
PGND1
Power Ground for output 1. Provides the ground return path for the
high-side drive current.
PGND1 pin and PGND2 pin are internally connected by anti-parallel diodes.
9,10
11 (1)
15,16
1 (1)
SW1
EN1
Switch for output 1 (Output): Internal power P-Channel MOSFET output switch
Enable for output 1 (Input). Logic level low, will shutdown the device, reducing
the current draw to less than 5μA (both EN1 and EN2 are low).
12
2
FB1
Feedback for output 1 (Input). Input to the error amplifier, connect to the
external resistor divider network to set the output voltage.
13
3
SGND
Signal (Analog) Ground. Provides return path for control circuitry and internal
reference.
16
6
BIAS
Internal circuit bias supply. Must be bypassed with a 0.1μF ceramic capacitor
to SGND. Biased through a 10 ? resistor to VIN.
EPAD
EPAD
GND
Connect to ground.
Note:
1. Do not float Enable Input.
March 2009
3
M9999-030209-C
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| MIC4782YML-TR | 功能描述:Buck Switching Regulator IC Positive Adjustable 0.6V 2 Output 2A 16-VFQFN Exposed Pad, 16-MLF? 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 功能:降压 输出配置:正 拓扑:降压 输出类型:可调式 输出数:2 电压 - 输入（最小值）:3V 电压 - 输入（最大值）:6V 电压 - 输出（最小值/固定）:0.6V 电压 - 输出（最大值）:6V 电流 - 输出:2A 频率 - 开关:1.8MHz 同步整流器:无 工作温度:-20°C ~ 125°C（TJ） 安装类型:表面贴装 封装/外壳:16-VFQFN 裸露焊盘，16-MLF? 供应商器件封装:16-MLF?（4x4） 标准包装:1 |
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