ML4835 查看數據表（PDF） - Micro Linear Corporation

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ML4835

Compact Fluorescent Electronic Dimming Ballast Controller

Micro Linear Corporation 

ABSOLUTE MAXIMUM RATINGS

Absolute maximum ratings are those values beyond which

the device could be permanently damaged. Absolute

maximum ratings are stress ratings only and functional

device operation is not implied.

Supply Current (ICC) ............................................................. 65mA

Output Current, Source or Sink

(OUT A, OUT B, PFC OUT) DC ........................... 250mA

PIFB Input Voltage ............................................–3V to 2V

Maximum Forced Voltage

(PEAO, LEAO) ............................................ –0.3V to 7.7V

Maximum Forced Current

(PEAO, LEAO) ...................................................... ±20mA

ML4835

Junction Temperature .............................................. 150ºC

Storage Temperature Range ...................... –65ºC to 150ºC

Lead Temperature (Soldering, 10 sec) ..................... 260ºC

Thermal Resistance (qJA)

ML4835CP .......................................................... 65ºC/W

ML4835CS .......................................................... 80ºC/W

OPERATING CONDITIONS

Temperature Range ....................................... 0°C to 85°C

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, VCC = VCCZ –0.5V, RSET = 11.8kW, RT = 15.4kW, RT2 = 67.5kW, CT = 1.5nF,

TA = Operating Temperature Range (Note 1)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

LAMP CURRENT AMPLIFIER (LAMP FB, LEAO)

Input Bias Current

-0.3

Small Signal Transconductance

35

75

Input Bias Voltage

-0.3

Output Low

Output High

Source Current

LAMP FB = 3V, RL = ¥

LAMP FB = 2V, RL = ¥

LAMP FB = 0V, LEAO = 6V

0.2

7.1

7.5

-80

-220

Sink Current

LAMP FB = 5V, LEAO = 0.3V

80

220

PFC VOLTAGE FEEDBACK AMPLIFIER ( PEAO, PVFB/OVP)

Input Bias Current

-0.3

Small Signal Transconductance

35

75

Input Bias Voltage

-0.3

Output Low

Output High

Source Current

PVFB = 3V, RL = ¥

PVFB = 2V, RL = ¥

PVFB = 0V, PEAO = 6V

0.2

6.4

6.8

-80

220

Sink Current

PVFB = 5V, PEAO = 0.3V

80

220

PFC CURRENT-LIMIT COMPARATOR (PIFB)

Current-Limit Threshold

-0.9

-1.0

Propagation Delay

100mV Step and 100mV Overdrive

100

PFC OVP COMPARATOR

OVP Threshold

2.65

2.75

Hysteresis

0.14

0.20

Propagation Delay

1.4

MAX

-1.0

105

5.0

0.4

-1.0

105

5.0

0.4

-1.1

2.85

0.30

UNITS

µA

µ

V

V

V

µA

µA

µA

µ

V

V

V

µA

µA

V

ns

V

V

µs

3

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