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DP3119 Datasheet Preview

DP3119 Datasheet

36V 2.1A Monolithic Step Down Switching Regulator

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DP3119
www.depuw.com
36V 2.1A Monolithic Step Down Switching Regulator
Rev2.0
Description
Features
TheDP3119 is a monolithic 36V, 2.1A step-down
switch regulator. DP3119 integrates a high
efficiency synchronous step-down switching
regulator, which includes a 36V 108mΩ high side
and a 36V, 102mΩ low side MOSFETs to provide
2.1A continuous load current over a 6.5V to 30V
wide operating input voltage. Peak current mode
control provides fast transient responses and
cycle-by-cycle current limiting. Programmable
soft-start prevents inrush current at power-up.
The supply current drops below 1μA in shutdown
mode.
Applications
USB car charger
Portable charging device
General purpose
2.1A continuous output current capability
6.5V to 36V wide operating input range with
33V input Over Voltage Protection
Integrated 36V, 108mΩ high side and 36V,
102mΩ low side power MOSFET switches
Up to 92% efficiency
Programmable Soft-Start limits the inrush
current at turn-on
Stable with Low ESR Ceramic Output
Capacitors
Fixed 100KHz Switching Frequency
Input Under-Voltage Lockout. Output
Over-Voltage Protection
Over-Temperature Protection
Thermally Enhanced ESOP-8 Package
Typical Application Schematic
DEVELOPER MICROELECTRONICS




DEVELOPER MICROELECTRONICS

DP3119 Datasheet Preview

DP3119 Datasheet

36V 2.1A Monolithic Step Down Switching Regulator

No Preview Available !

36V 2.1A Monolithic Step Down Switching Regulator
Efficiency
DP3119
Rev2.0
Pin Configuration and Functions
ESOP-8 Package (Top View)
Pin
Number
Name
1 BST
2 VIN
3 SW
4 GND
5 FB
6 COMP
7 EN
8 SS
9 EPAD
Pin-Functions
Description
Boot-Strap pin. Connect a 0.1μF or greater capacitor between SW and BST to power the high
side gate driver.
Power Input. Vin supplies the power to the IC. Supply Vin with a 4.5V to 36V power source.
Bypass Vin to GND with a large capacitor and at least another 0.1uF ceramic capacitor to
eliminate noise on the input to the IC. Put the capacitors close to Vin and GND pins.
Power Switching pin. Connect this pin to the switching node of inductor.
Ground
Feedback Input. FB senses the output voltage. Connect FB with a resistor divider connected
between the output and ground. FB is a sensitive node. Keep FB away from SW and BST pin.
Connect compensation network to make the converter work stably.
Enable Input. EN is a digital input that turns the regulator on or off. Drive EN high to turn on
the regulator; low to turn it off. EN is pulled to VIN internally by a large resistor.
Soft-start adjustment. Connect a cap to program soft-start time.
EPAD is connected to GND internally. EPAD must be connected to GND on PCB board to
get full power.
DEVELOPER MICROELECTRONICS


Part Number DP3119
Description 36V 2.1A Monolithic Step Down Switching Regulator
Maker DEVELOPER MICROELECTRONICS
Total Page 13 Pages
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