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参数资料
| 型号： | HMC976LP3E |
| 厂商： | Hittite Microwave Corporation |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 4.8V/ADJ .4A 16QFN |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 4.8V，1.8 V ~ 5.1 V |
| 输入电压： | 3.3 V ~ 5.5 V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 400mA（最小值） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN-EP（3x3） |
| 包装： | 标准包装 |
| 其它名称： | 1127-1080-6 |
HMC976LP3E
v02.1112
400mA LOW NOISE, HIGH PSRR
LINEAR VOLTAGE REGULATOR
Figure 13. Evaluation PCB Schematic
Operational Features
The recommended configuration is “HMC976LP3E 4.8V User Application Schematic” . This is for the default output
voltage of 4.8V nominal. The values shown are those recommended for optimum Noise Spectral density. For users
requiring extremely low noise in the 1 MHz to 10 MHz range the largest output capacitor should be used: a 68uF takes
the noise between 100 kHz and 1 MHz to below 2.5nV/√Hz.
Load Capacitor Characteristics
The HMC976LP3E was designed to work with a low ESR ceramic load capacitor on the VRX pin (C21 in the
schematic above). Low ESR ceramic capacitors are very small and best for eliminating high frequency noise. Ceramic
capacitors can vary as much as 50% versus temperature and 60% versus voltage, dependant on the ceramic type
e.g. Z5U, Y5V, X7R or X5R. There are no restrictions on ceramic type or minimum ESR, only that the user must
guarantee that the minimum output capacitance over operating conditions is 4.7μF, smaller values can result in noise
peaking or lower stability.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel ? 978-250-3373 fax ? Order On-line at www.hittite.com
Application Support: apps@hittite.com
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