ML4826 Ver la hoja de datos (PDF) - Fairchild Semiconductor

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ML4826

PFC and Dual Output PWM Controller Combo

Fairchild Semiconductor 

PRODUCT SPECIFICATION

ML4826

Electrical Characteristics (continued)

Unless otherwise specified, ICC = 25mA, RRAMP 1 = RT = 52.3kΩ, CRAMP1 = CT = 180 pF,

TA = Operating Temperature Range (Note 1)

Symbol

Parameter

Load Regulation

Total Variation

Long Term Stability

PFC

Minimum Duty Cycle

Maximum Duty Cycle

Output Low Voltage

Output High Voltage

PWM

Rise/Fall Time

Duty Cycle Range

Output Low Voltage

Output High Voltage

Rise/Fall Time

Supply

Shunt Regulator Voltage

(VCCZ)

VCCZ Load Regulation

VCCZ Total Variation

Start-up Current

Operating Current

Undervoltage Lockout

Threshold

Undervoltage Lockout

Hysteresis

Conditions

1mA < I(VREF) < 20mA

Line, Load, Temp

TJ = 125˚C, 1000 Hours

ML4826-2, VIEAO > 5.7V

VIEAO < 1.2V

IOUT = –20mA

IOUT = –50mA

IOUT = 10mA, VCC = 8V

IOUT = 20mA

IOUT = 50mA

CL = 1000pF

IOUT = –20mA

IOUT = –50mA

IOUT = 10mA, VCC = 8V

IOUT = 20mA

IOUT = 50mA

CL = 1000pF

25mA < ICC < 55mA

Load, temp

VCC = 11.2V, CL = 0

VCC < VCCZ – 0.5V, CL = 0

Min.

7.25

Typ.

7

5

Max. Units

20 mV

7.65 V

25 mV

0

%

90 95

%

0.4 0.8 V

0.6 3.0 V

0.7 1.5 V

9.5 10.5

V

9.0 10

V

50

ns

0-47 0-48 0-50 %

0.4 0.8 V

0.6 3.0 V

0.7 1.5 V

9.5 10.5

V

9.0 10

V

50

ns

12.8 13.5 14.2 V

±150 ±300 mV

12.4

14.6 V

0.7 1.1 mA

22 28 mA

12 13 14 V

2.65 3.0 3.35 V

Notes:

1. Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.

2. Includes all bias currents to other circuits connected to the VFB pin.

3. Gain = K x 5.3V; K = (IGAINMOD - IOFFSET) x IAC x (VEAO - 1.5V)-1.

REV. 1.0.5 2/14/02

5

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