AIC1521-1CO中文资料

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Single High-Side Power Switch With Control

Function

ORDERING INFORMATION

0: Active Low1: Active High

n ABSOLUTE MAXIMUM RATINGS

Supply Voltage (VIN)

.......................................................………….......……........... 7.0V

......………..............…………….…............... -40°C ~ 85°C....................................……….................. -65°C ~ 150°C

Operating Temperature Range

Storage Temperature Range

n ELECTRICAL CHARACTERISTICS (V

specified.)

PARAMETERS

Supply Current

Control Input Voltage

Control Input Current

Output MOSFET Resistance

Output Turn-On Rise Delay

Output Turn-On Rise Time

Output Turn-Off Delay

CONDITIONS

Switch Off, OUT=Open

Switch On, OUT=Open

VCTL =Logic “0”

VCTL =Logic “1”

VCTL =Logic “0”

VCTL =Logic “1”

IOUT = 500mA RL = 10 RL = 10 R = 10

IN= 5V, Ta=25°C, unless otherwise

MIN. 2.4

TYP. 0.75 80 0.01 0.01

MAX. 2 100 0.8 1 1 180 10

UNIT µA V µA m µS µS µS

120 30 500 0.2

n ELECTRICAL CHARACTERISTICS (Continued)

P ARAMETERS

Output Turn-Off Fall Time

Output Leakage Current

Current Limit Threshold

Thermal Limit

UVLO Threshold

C ONDITIONS

R = 10

VIN Increasing

VIN Decreasing

M IN.

0.6

T YP.

0.2 1.0 110 2.8 2.6

M AX.

10 2 1.25

U NIT

µS µ

A A

°C V

n BLOCK DIAGRAM

CTL

OUT

n TYPICAL PERFORMANCE CHARACTERISTICS

On-State Supply Current vs. Supply Voltage

9085

On-State Supply Current vs. Temperature

Supply Current (µA)

8075706560

Supply Current (µA)

3.5

4.0

3.04.55.05.56.06.57.07.5

-40-20020406080100

Supply Voltage (V)

Temperature (°C)

n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

Off-State Supply Current vs. Supply Voltage

12.011.5

201816

Off-State Supply Current vs. Temperature

Supply Current (nA)

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

11.09.59.08.58.03.0

14121086420

-40

-20

100

Supply Voltage (V)

Temperature (°C)

Output On Resistance vs. Supply Voltage

130125120115110105100

3.0

150

Switch On Resistance (m )

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

Switch On Ristance (m )

1401301201101009080

Supply Voltage (V)

-40-20020406080100

Temperature (°C)

UVLO Threshold Voltage vs. Temperature

3.0

1.20

2.9

Current Limit Threshold vs. Temperature

UVLO Threshold Voltage (V)

1.15

2.82.7

Current Limit (A)

1.101.051.000.950.90

2.62.52.4

-40

-20

100

0.850.80

-40

-20

100

Temperature (°C)

n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

Output Rise Time vs. temperature

550

300

Output Fall Time vs. Temperature

Output Rise Time (µ S)

500

Output Fall Time (nS)

250

200

450

150

400

100

350

-40

-20

100

-40

-20

100

Temperature (°C)

CTL Threshold Voltage vs. Supply Voltage

2.22.01.81.6

Turn On Characteristic (35 , Loading)

220µF

100µF

1.41.21.03.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

CTL

No Cap

IOUT, 200mA/DIV

Supply Voltage (V)

Turn On Rising Time (10 loading)Turn Off Falling Time (10 Loading)

IOUT

200mA/DIV

IOUT

VOUT

200mA/DIV

VOUT

CTL

n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

Turn On Characteristic (35 , 100µF Loading)

Turn Off Falling Time (35 , 100uF Loading)

IOUT

500mA/DIV

IOUT

500mA/DIV

VOUT

CTL

Current Limit ThresholdThermal Limiting Transient Response

VOUT

IOUT 500mA/DIV

) loading)

IOUT 500mA/DIV

Short Circuit TestingShort Circuit Response Time

Short

VOUT

Thermal Oscillation

IOUT

1A/DIV

IOUT 500mA/DIV

VOUT

n PIN DESCRIPTION

MSOP8, SO8

PIN 1/4/6/8: NC:

PIN 2: CTL

-TTL compatible control input. It

controls the power switch turn-on/turn-off. Active High forAIC1521-1 and active low forAIC1521-0.Power supply input.Chip power ground.

SOT89-5

PIN 1:IN

PIN 2:GND

PIN 3:OUT

PIN 4:NC

PIN 5:CTL

-TTL compatible control input. It

controls the power switch turn-on/turn-off. Active High forAIC1521-1 and active low forAIC1521-0.-Power supply input.-Chip power ground.- MOSFET switch output.

PIN 3: IN-

PIN 4: GND-

PN 7: OUT- MOSFET switch output.

n APPLICATION INFORMATIONS

l Current Limit

The current limit threshold is preset internally. Itprotects the output MOSFET switches fromdamage due to undesirable short circuitconditions or excess inrush current oftenencountered during hot plug-in. The AIC1521allows minimum 500mA continuous load currentper Channel.

l Transient Droop Requirements

USB support dynamic attachment (hot plug-in) ofperipherals. A current surge is caused by the inputcapacitance of downstream device. Ferrite beadsare recommended in series with all power andground connector pins. Ferrite beads reduce EMIand limit the inrush current during hot-attachmentby filtering high-frequency signals.l Short Circuit Transient

Bulk capacitance provides the short-term transientcurrent needed during a hot-attachment event. Witha 33uF, 16V tantalum or 100uF, 10V electrolyticcapacitor mounted close to downstream connectorshould provide transient drop protection.l Printed Circuit Layout

The power circuitry of USB printed circuit boardsrequires a customized layout to maximize thermaldissipation and to minimize voltage drop and EMI.

l Thermal Protection

When the chip temperature exceeds 110°C, thethermal protection function works.

l Supply Filtering

A 0.1uF to 1uF bypass capacitor from IN to GND,located near the device, is strongly recommendedto control supply transients. Without a bypasscapacitor, an output short may cause sufficientringing on the input (from supply lead inductance) todamage internal control circuitry.

¡½

PHYSICAL DIMENSIONS

l MSOP 8 (unit: mm)

SYMBOL

AA1

MIN0.76--0.280.132.902.90

0.65

4.800.40

MAX0.970.200.380.233.103.105.000.66

BCDEe

l 8 LEAD PLASTIC SO (unit: mm)

SYMBOL