EHP2604|Programmable Overvoltage Protection Switch with Maximum 1A

EHP2604|Programmable Overvoltage Protection Switch with Maximum 1A


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EHP2604

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ Programmable Overvoltage Protection​​ 

 

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ Switch with Maximum 1A

 

 

GENERAL DESCRIPTION

The​​ EHP2604 is a front-end over voltage and over current protection device. It achieves wide input voltage range from 2.5VDC to 40VDC. The over voltage threshold can be programmed externally or set to internal default setting. The low resistance of integrated power path nFET switch ensures better performance for battery charging system applications. It can deliver up to 1A current to satisfy the battery supply system. It integrates the over-temperature protection shutdown and auto-recovery circuit with hysteresis to protect against over current events.

FEATURES

 Absolute maximum input voltage: 40V

 Maximum load current : 1A

 Low power path resistance : 350mΩ (Typ.)

 Fixed Internal OVP threshold : 5.85/6.1/6.8/10.5/14.0 V (Typ.)

 OVP response time : 50ns

 Internal 15-ms Start-Up or OVP Recovery Delay

 Programmable over voltage threshold : 4V to 20V

 Internal soft start to prevent In-rush current

 Thermal shutdown protection & Auto recovery

 Output short-circuit protection

 RoHS compliant and Halogen free

 Compact package :SOT23-6L

APPLICATIONS

​​ Smart Device

​​ Battery Supplied System

​​ Wearable Device

Order Information

EHP2604​​ XX​​ B3​​ R

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  ​​ ​​ ​​ ​​ ​​​​ 

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  ​​ ​​ ​​ ​​ ​​​​ Reel

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  ​​ ​​​​  ​​ ​​​​ Package Type:​​ SOT23-6L

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ OVP threshold voltage

​​ Example:​​ 68: 6.8V

 

 

 

 

 

 

 

 

Marking Information

 

G:​​  ​​​​ Product Code.​​ 

XY: Internal Control​​ Code.

W:​​ ​​ The week of manufacturing.​​ 

“A”stands for week 1,“Z” stands for​​ week​​ 26,​​ 

“a” stands for week​​ 27, “z” stands for week​​ 52.

V:​​ ​​ Version.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PIN DESCRIPTION

PIN

SYMBOL

TYPE

PIN DESCRIPTION

1/2/5/6

GND

Ground

Power ground pin.

 

3

 

IN

 

I

Power input pin. Decouple high frequency noise by connecting

at least 0.1uF MLCC to ground.

4

OUT

O

Output voltage pin. Source side of the internal nFET.

 

 

TYPICAL APPLICATION CIRCUIT

 

 

 

EHP2604

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ABSOLUTE MAXIMUM RATINGS (Note)

 

SYMBOL

ITEMS

VALUE

UNIT

VIN

Input Voltage

-0.3~40

V

VOUT

Output Voltage

-0.3~15

V

VOVLO

OVLO Voltage

-0.3~20

V

IOMAX

Maximum Output Continues Load Current

1

A

PDMAX

Power Dissipation

SOT23-6

TBD

W

RθJA

Thermal Resistance

SOT23-6

TBD

/W

TJ

Junction Temperature

-40~150

Tstg

Storage Temperature

-55~150

Tsolder

Package Lead Soldering Temperature (10s)

260

HBM

ESD Susceptibility, Human Body Model

TBD

KV

MM

ESD Susceptibility, Machine Model

TBD

KV

CDM

ESD Susceptibility, Charged Device Model

TBD

V

 

Note:​​ Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.

 

 

 

RECOMMANDED OPERATING RANGE

 

SYMBOL

ITEMS

VALUE

UNIT

VIN

Input Supply Voltage

2.5 to 20

V

VOUT

Output Voltage

< 15

V

IOUT

Continue Output Current

<1

A

VOVLO

OVLO Voltage

0 to 20

V

TOPR

Operating Temperature

-40 to +85

CIN

Input capacitance

1

µF

CLOAD

Output load capacitance

1

µF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ELECTRICAL CHARACTERISTICS

(VIN​​ = 2.8V to 40V, CIN=1uF, COUT=1uF, TA=25​​ , unless otherwise noted.)

 

Parameter

Symbol

Test Conditions

MIN

TYP

MAX

UNIT

Input Voltage

VIN

 

2.8

 

40

V

Input UVLO Threshold

VUVLO

 

 

 

2.4

V

UVLO Hysteresis

VHYS

 

 

100

 

mV

Input Quiescent Current

IQ

VIN=5V,VIN<VOVLO

 

TBD

 

µA

OVLO Input Leakage Current

IOVLO

VOVLO=VOVLO_TH

-100

 

100

nA

 

 

 

Internal Default OVP Threshold

VOVLO

Rising

EHP2604585

5.67

5.85

6.03

 

V

EHP260461

5.8

6.1

6.4

EHP260468

6.6

6.8

7.0

EHP2604105

10.0

10.5

11.0

EHP2604140

13.5

14.0

14.5

 

Internal OVP Hysteresis

VOVLO_HYS

Falling

 

150

 

mV

OVLO Preset Threshold

VOVLO_TH

Rising

1.14

1.2

1.26

V

OVLO Hysteresis

 

Falling

 

20

 

mV

External OVLO Select Threshold

VOVLO_SEL

 

 

0.2

0.28

V

Programmable OVLO range

VOVPPR

 

4

 

20

V

 

On Resistance of power path

 

RON

VIN=5V,IOUT=500mA,

from IN to OUT

 

 

350

 

 

Startup or OVP Recovery

Debounce Time

 

TDEB

Time from 2.5V<VIN<VOVLO​​ to

VOUT=10% of VIN

 

 

15

 

 

mS

 

Soft start Turn-On Time

 

tON

VIN=5V, RL=100, COUT=100uF;

VOUT=10% of VIN​​ to 90% VIN

 

 

2

 

 

mS

OVP Switch Turn-Off Time

tOFF

VIN> VOVLO​​ to VOUT​​ stop rising

 

50

100

nS

Output Discharge Resistance

RDISC

OVP Triggered

 

200

 

Ω

Thermal Shutdown Temperature

TSD

 

 

150

 

Thermal Shutdown Hysteresis

THYS

 

 

20

 

 

Note : R1=1MΩ is a good starting value for minimum current consumption. Since VOVLO, VOLVO_TH, and R1 are known, R2 can be calculated from the following formula:

 

VOVLO​​ =VOVLO_TH​​ ×(1+R1/R2)

=1.2V ×(1+R1/R2) ,​​ 

R2=R1/[ (VOVLO​​ /1.2)-1] .

 

 

 

 

 

SIMPLIFIED BLOCK DIAGRAM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TIMING DIAGRAM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PACKAGE OUTLINE

 

 

 

 

 

 

 

 

 

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0I17N-Rev.F001

 

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E-CMOS​​ Corp.​​ (www.ecmos.com.tw)


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The Rules Are Rigid, The Design Is Alive
We Provide Flexible And Flexible Customized Ic And Module Design

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