Diodes AP2331 User Manual

AP2331

Description

The AP2331 is single channel current-limited integrated high-side power switches optimized for hot-swap applications. The devices have fast short-circuit response time for improved overall system robustness and provide a complete protection solution for application subject to heavy capacitive loads and the prospect of short circuit. It offers reverse-current blocking, over-current, over-temperature and short-circuit protection, as well as controlled rise time and undervoltage lockout functionality.

The device is available in SOT23 and SC59 packages.

Features

• Input voltage range: 2.7V – 5.2V

• Fast short-circuit response time

• 0.4A accurate current limiting

• 250mΩ on-resistance

• Reverse-current blocking

• Built-in soft-start with 0.7ms typical turn-on time

NEW PRODUCT

• Over-current protection

• Over-voltage protection

• Short-circuit and thermal protection

• ESD protection: 3KV HBM, 300V MM

• Ambient temperature range: -40°C to +85°C

• Available in “Green” molding compound (No Br, Sb)

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3)

• UL recognized, file number E322375

• IEC60950-1 CB scheme certified

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds

Typical Application Circuit

0.2A SINGLE CHANNEL CURRENT-LIMITED LOAD SWITCH

Pin Assignments

(Top View)

GND

IN

OUT

SOT23

(Top View)

GND

IN

OUT

SC59

Applications

• LCD TVs & Monitors

• Set-Top-Boxes, Residential Gateways

• Laptops, Desktops, Servers

• Printers, Docking Stations, HUBs

• Smart phones, e-Readers

Power Supply

2.7V to 5.2V

AP2331

Document Number: DS35529 Rev. 4 - 2

0.1µF

IN

OUT

GND

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0.1µF

Load

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AP2331

0.2A SINGLE CHANNEL CURRENT-LIMITED LOAD SWITCH

Pin Descriptions

Pin Name Pin Number Descriptions

GND 1 GND OUT

IN

2 Switch output pin 3 Voltage input pin

Absolute Maximum Ratings

Symbol Parameter Ratings Units

ESD HBM Human Body Model ESD Protection 3 KV

ESD MM Machine Model ESD Protection 300 V

VIN

NEW PRODUCT

Note: 4. UL Recognized Rating from -30°C to +70°C (Diodes qualified TST from -65°C to +150°C)

V I

LOAD

T

TST

OUT

JMAX

Input Voltage relative to GND 6.5 V Output Voltage relative to GND Maximum Continuous Load Current Internal Limited A Maximum Junction Temperature 150 °C Storage Temperature Range (Note 4) -65 to +150 °C

Recommended Operating Conditions

Symbol Parameter Min Max Units

V

I

OUT

T

IN

A

Input voltage relative to GND 2.7 5.2 V Output Current 0 0.2 A Operating Ambient Temperature -40 +85 °C

AP2331

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VIN +0.3

V

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0.2A SINGLE CHANNEL CURRENT-LIMITED LOAD SWITCH

Electrical Characteristics (T

= 25°C, V

A

Symbol Parameter Test Conditions (Note 5) Min Typ. Max Unit

V

Input UVLO

UVLO

I

Input quiescent current

Q

I

Reverse leakage current

REV

R

I

T

V

T

NEW PRODUCT

V

T

Notes: 5. Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately.

6. When reverse current triggers at I turned off.

8. Since the output turn-on slew rate is dependent on input supply slew rate, this limit is only applicable for input supply slew rate between V V

Switch on-resistance

DS(ON)

Over-load current limit

LIMIT

IOS

Short-circuit current OUT shorted to ground 0.3 0.4 0.5 A Reverse-current trigger point

ROCP

Deglitch time from reverse current trigger

TRIG

to MOSFET turn off Output over-voltage trip point (Note 7) 5.3 5.6 V

OVP

Debounce time from output over-voltage

OVP

to MOSFET turn off Recovery after turn-off from ROCP and

REC

OVP

TON

Output turn-on time (Note 8)

Thermal shutdown threshold

SHDN

Thermal shutdown hysteresis 20 °C

HYS

Thermal Resistance Junction-to-Ambient

θ

JA

(Note 9)

= 0.20A, the reverse current is continuously clamped at I

ROCP

7. During output over-voltage protection, the output draws approximately 60µA current.

/1ms.

IN

9. Device mounted on FR-4 substrate PCB, 2oz copper, with minimum recommended pad layout.

= +5.0V, unless otherwise stated.)

IN

VIN rising Above UVLO, I VIN = 0V, V V

= 5V, I

IN

VIN = 5V, V

VIN = 5.0V, V

(Note 6) 0.5 0.7 1.0 ms

15 µs

101%

C

L

(UVLO to 90% V V

SOT23 215 SC59 255

OUT

= 0.1µF, R

= 2.7V to 5.2V

IN

OUT

= 0.2A

OUT

LOAD

= 0

OUT

= 5V, I

= 4V

= 5.2V

= 20Ω

OUT-NOM

REV

at VIN

)

2.35 2.65 V 85 125 µA

0.01 0.10 µA

100 250 350 mΩ

0.3 0.4 0.5 A

0.20 0.25 A

0.7 ms

150 °C

for 0.7ms deglitch time until MOSFET is

ROCP

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AP2331

VIN

o

C/W

o

C/W

/0.2ms to

IN

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A

0.2A SINGLE CHANNEL CURRENT-LIMITED LOAD SWITCH

Typical Performance Characteristics

UVLO Increasing

AP2331

UVLO Decreasing

NEW PRODUCT

1ms/div

Over-Load Current Limit

5ms/div

Deglitch Time from Reverse-Current Trigger to

MOSFET Turn-Off

5ms/div

Short-Circuit Current Limit

100µs/div

Reverse-Current Limit

550µs

200m

200µs/div

AP2331

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200µs/div

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