参数资料
型号: ADP2120ACPZ-1.2-R7
厂商: Analog Devices Inc
文件页数: 6/24页
文件大小: 0K
描述: IC REG BUCK SYNC 1.2V 10LFCSP
标准包装: 1
类型: 降压(降压)
输出类型: 固定
输出数: 1
输出电压: 1.2V
输入电压: 2.3 V ~ 5.5 V
PWM 型: 电流模式
频率 - 开关: 1.2MHz
电流 - 输出: 1.25A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘,CSP
包装: 标准包装
供应商设备封装: 10-LFCSP-WD(3x3)
其它名称: ADP2120ACPZ-1.2-R7DKR

ADP2119/ADP2120
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ADP2119/ADP2120
Data Sheet
VIN
PVIN
SW
1
2
3
10
9
8
EN
SYNC/MODE
PGOOD
PGND
GND
4
5
EXPOSED
PAD
7
6
TRK
FB
NOTES
1. THE EXPOSED PAD SHOULD BE SOLDERED TO
AN EXTERNAL GROUND PLANE UNDERNEATH
THE IC FOR THERMAL DISSIPATION.
Figure 3. Pin Configuration (Top View)
Table 4. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
EPAD
Mnemonic
VIN
PVIN
SW
PGND
GND
FB
TRK
PGOOD
SYNC/MODE
EN
Exposed Pad
Description
Bias Voltage Input Pin. Connect a bypass capacitor (0.1 μF minimum) between this pin and GND and a
small (10 ?) resistor between this pin and PVIN.
Power Input Pin. Connect this pin to the input power source. Connect a bypass capacitor between this pin and PGND.
Switch Node Output. Connect this pin to the output inductor.
Power Ground. Connect this pin to the power ground plane and to the high current return for the power MOSFET.
Analog Ground. Connect this pin to the ground plane.
Feedback Voltage Sense Input. Connect this pin to a resistor divider from V OUT . For the fixed output version,
connect to V OUT directly.
Tracking Input. To track a master voltage, drive TRK from a resistor divider from the master voltage. If the
tracking function is not used, connect TRK to VIN.
Power-Good Output (Open Drain). Connect this pin to a resistor to any pull-up voltage < 5.5 V.
Synchronization Input (SYNC). Connect this pin to an external clock between 1 MHz and 2 MHz to synchronize
the switching frequency to the external clock (see the Oscillator and Synchronization section for details).
FPWM/PFM Selection (MODE). When this pin is connected to VIN, the PFM mode is disabled and the part works
in continuous conduction mode (CCM) only. When this pin is connected to ground, the PFM mode is enabled
and becomes active at light loads.
Precision Threshold Enable Input Pin. An external resistor divider can be used to set the turn-on threshold. To
enable the part automatically, connect the EN pin to VIN. This pin has a 1 M? pull-down resistor to GND.
The exposed pad should be soldered to an external ground plane underneath the IC for thermal dissipation.
Rev. A | Page 6 of 24
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