EC9210
High Efficiency 1.5MHz, Step up Regulator
General Description
The EC9210 is a fixed switching frequency (1.5MHz typical), current-mode, step-up regulator with an integrated N-channel MOSFET. The device allows the usage of small inductors and output capacitors for portable devices. The current-mode control scheme provides fast transient response and good output voltage accuracy.
The EC9210 includes under-voltage lockout, current limit, and
over-temperature shutdown preventing damage in the event of an output overload.
Features
●Wide 2.7V to 6V Input Voltage Range
●Built‐in 0.2Ω N‐Channel MOSFET
● Built‐in Soft‐Start
● High Efficiency up to 90%
● <1µA Quiescent Current During Shutdown
● Current‐Mode Operation
● Stable with Ceramic Output Capacitors
● Fast Transient Response
● Current‐Limit Protection
● Over‐Temperature Protection with Hysteresis
● Available in a TSOT23‐5 Package
● Lead Free and Green Devices Available
● (RoHS Compliant)
Applications
●Cell Phone and Smart Phone
●PDA, PMP, MP3
●Digital Camera
●Boost Regulators
Package Types
TSOT235
Figure 1. Package Types of EC9210
EC9210
High Efficiency 1.5MHz, Step up Regulator
Pin Configurations
Figure 2 Pin Configuration of EC9210(Top View)
Pin Description
Pin Number |
Pin Name |
Description |
1 |
LX |
Switch pin. Connect this pin to inductor/diode here. |
2 | GDN | GND |
3 |
FB | Feedback Input. The device senses feedback voltage via FB and regulate the voltage at 1.23V. Connecting FB wi th a resistor‐divider from the output that sets the output voltage. |
4 |
EN | Enable Control Input. Forcing this pin above 1.0V enables the device. Forcing this pin below 0.4V to shut it down. In shutdown, all functions are disabled to decrease the supply current below 1μA. Do not left this pin floating. |
5 |
IN | Main Supply Pin. Must be closely decoupled to GND with a 2.2μF or greater ceramic capacitor. |
Ordering Information
Part Number | Package | Marking | Marking Information |
EC9210NNT2R | TSOT23-5 | TD8210 LLLLL |
|
EC9210
High Efficiency 1.5MHz, Step up Regulator
Function Block
Figure 3 Function Block Diagram of EC9210
EC9210
High Efficiency 1.5MHz, Step up Regulator
Absolute Maximum Ratings
Note1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability
Recommended Operating Conditions
Thermal Characteristics
Symbol |
Parameter |
Typical Value |
Unit | |
θJA | Junction-to-Ambient Resistance in Free Air | TSOT23-5 | 220 | ℃/W |
θJC |
Junction-to-Case Resistance | TSOT23-5 | 120 | ℃/W |
EC9210
High Efficiency 1.5MHz, Step up Regulator
Electrical Characteristics
(TA=25°C, Unless otherwise specified)