EC9210|High Efficiency 1.5MHz, Step Up Regulator


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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

Builtin​​ 0.2Ω​​ NChannel​​ MOSFET

​​ Builtin​​ SoftStart

​​ High​​ Efficiency​​ up​​ to​​ 90%

​​ <1µA​​ Quiescent​​ Current​​ During​​ Shutdown

​​ CurrentMode​​ Operation

​​ Stable​​ with​​ Ceramic​​ Output​​ Capacitors

​​ Fast​​ Transient​​ Response

​​ CurrentLimit​​ Protection

​​ OverTemperature​​ Protection​​ with​​ Hysteresis

​​ Available​​ in​​ a​​ TSOT235​​ 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

6F20N-Rev.F003

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E-CMOS​​ Corp.​​ (www.ecmos.com.tw)

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​​ resistordivider​​ 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.F​​ or​​ greater​​ ​​ ceramic​​ capacitor.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ordering Information

 

 

 

Part Number

Package

Marking

Marking Information

EC9210NNT2R

TSOT23-5

TD8210

LLLLL

  • LLLLL:Lot No

6F20N-Rev.F003

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E-CMOS​​ Corp.​​ (www.ecmos.com.tw)

EC9210

High Efficiency 1.5MHz, Step up Regulator​​ 

 

Function Block

 

 

Figure​​ 3​​ Function​​ Block​​ Diagram​​ of​​ ​​ EC9210

6F20N-Rev.F003

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E-CMOS​​ Corp.​​ (www.ecmos.com.tw)

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

6F20N-Rev.F003

Page​​ 16​​ of​​ 16

E-CMOS​​ Corp.​​ (www.ecmos.com.tw)

EC9210

High Efficiency 1.5MHz, Step up Regulator​​ 

 

 

Electrical​​ Characteristics

 

(TA=25°C, Unless otherwise specified)

 

Symbol

Parameter

Test​​ Conditions

EC9210

 

 

Unit

Min.

Typ.

Max.

VIN

Input​​ Voltage

TA=40~85oC​​ TJ=-40~120​​ 

2.7

---

6

V

IDD1

 

 

Input​​ DC​​ Bias​​ Current

VFB=1.3V,no​​ switching

---

300

---

uA

IDD2

VFB=1.1V,​​ switching

---

2

5

mA