SC4809AIMSTRT Просмотр технического описания (PDF) - Semtech Corporation

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SC4809AIMSTRT

High Performance Current Mode PWM Controller

Semtech Corporation 

SC4809A/B/C

POWER MANAGEMENT

Absolute Maximum Ratings

Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified

in the Electrical Characteristics section is not implied.

Parameter

Symbol

Maximum

Units

Supply Voltage

Supply Current

SS, UVLO, DMAX, RCT

Current VREF

Current LUVLO

Storage Temperature Range

Junction Temperature

Thermal Resistance

Lead Temperature (Soldering) 10 Sec.

ESD Rating (Human body model)

VDD

IDD

IREF

ILUVLO

TSTG

TJ

θJA

TLEAD

ESD

19

25

-0.3V to VREF + 0.3V

15

-1

-65 to +150

-40 to +150

113

+300

2

V

mA

V

mA

mA

°C

°C

°C/W

°C

kV

Electrical Characteristics

Unless specified: VDD = 12V, CSS =1nF, FOSC = 500kHz, RT = 10K, CT = 100pF, DMAX = 2V, TA = TJ = -40ºC to +105ºC.

Parameter

Test Conditions

Min

Typ

Max

Unit

Supply Section

VDD Clamp

IDD

IDD Starting

UVLO Section (A version)

B version

16

17.5

19

V

1.5

2.5

mA

110

µA

Start Threshold

4.35

4.5

V

Hysteresis

0.3

V

UVLO Section (B version)

Start Threshold

11

12

V

Hysteresis

4

V

UVLO Section (C version)

Start Threshold

6.55

6.95

V

Hysteresis

0.75

V

VREF Section

VREF (A version)

0 - 5mA

-3%

4

+3%

V

VREF (B, C version)

0 - 5mA

-3%

5

+3%

V

 2005 Semtech Corp.

2

www.semtech.com

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