ADP2119-EVALZ Analog Devices Inc, ADP2119-EVALZ Datasheet - Page 6

• Manufacturer Part Number: ADP2119-EVALZ
• Description: Step-Down Regulator Eval. Board
• Manufacturer: Analog Devices Inc

Specifications of ADP2119-EVALZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Step Down DC/DC Converter
• Kit Application Type: Power Management - Voltage Regulator
• Silicon Core Number: ADP2119
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 0.6V ~ Vin
• Current - Output: 2A
• Voltage - Input: 2.3 ~ 5.5 V
• Regulator Topology: Buck
• Frequency - Switching: 1.2MHz
• Board Type: Fully Populated
• Utilized Ic / Part: ADP2119
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADP2119/ADP2120
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 4. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
EPAD
VIN
PVIN
SW
PGND
GND
FB
TRK
PGOOD
SYNC/MODE
EN
Exposed Pad
Mnemonic
Analog Ground. Connect this pin to the ground plane.
Power-Good Output (Open Drain). Connect this pin to a resistor to any pull-up voltage < 5.5 V.
Description
Bias Voltage Input Pin. Connect a bypass capacitor (0.1 μF minimum) between this pin and GND and a
small (10 Ω) 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.
Feedback Voltage Sense Input. Connect this pin to a resistor divider from V
connect to V
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.
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 MΩ pull-down resistor to GND.
The exposed pad should be soldered to an external ground plane underneath the IC for thermal dissipation.
OUT
directly.
NOTES
1. THE EXPOSED PAD SHOULD BE SOLDERED TO
AN EXTERNAL GROUND PLANE UNDERNEATH
THE IC FOR THERMAL DISSIPATION.
PGND
PVIN
Figure 3. Pin Configuration (Top View)
GND
VIN
SW
ADP2119/ADP2120
1
2
3
4
5
Rev. 0 | Page 6 of 24
EXPOSED
PAD
10
9
8
7
6
EN
SYNC/MODE
PGOOD
TRK
FB
OUT
. For the fixed output version,