TOP232G datasheet(24/36 Pages) POWERINT

24 / 36 page

TOP232-234

7/01

ABSOLUTE MAXIMUM RATINGS(1)

DRAIN Voltage ............................................ -0.3 to 700 V

DRAIN Peak Current: TOP232 ................................. 0.8 A

TOP233 ................................. 1.6 A

TOP234 ................................. 2.4 A

CONTROL Voltage .......................................... -0.3 to 9 V

CONTROL Current ...............................................100 mA

MULTI-FUNCTION Pin Voltage .................... -0.3 to 9 V

FREQUENCY Pin Voltage ............................... -0.3 to 9 V

C = 4 mA;

J = 25 °C

C =

CD1

OSC

∆f

MAX

MIN

SOFT

CONTROL FUNCTIONS

Conditions

(Unless Otherwise Specified)

See Figure 34

SOURCE = 0 V

; T

J = -40 to 125 °C

Min

Typ

Max

Parameter

Symbol

Units

THERMAL IMPEDANCE

kHz

%/mA

Thermal Impedance: Y Package (

JA)

(1) ............... 70

°C/W

(

JC)

(2) ................. 2

°C/W

P/G Package:

(

JA) ........ 45 °C/W

(3); 35

°C/W(4)

(

JC)

(5) .......................... 11

°C/W

Notes:

1. Free standing with no heatsink.

2. Measured at the back surface of tab.

3. Soldered to 0.36 sq. inch (232 mm2), 2oz. (610 gm/m2) copper clad.

4. Soldered to 1 sq. inch (645 mm2), 2oz. (610 gm/m2) copper clad.

5. Measured on the SOURCE pin close to plastic interface.

124

132

140

61.5

70.5

± 4

± 2

250

75.0

78.0

82.0

35.0

47.0

57.0

0.8

1.5

2.7

-27

-22

-17

C =

4 mA; T

J = 25 °C

Switching

Frequency

(average)

Frequency Jitter

Deviation

Frequency Jitter

Modulation Rate

Maximum Duty

Cycle

Minimum Duty

Cycle (Prior to

Cycle Skipping)

Soft Start Time

PWM

Gain

FREQUENCY Pin

Connected to SOURCE

FREQUENCY Pin

Connected to CONTROL

132 kHz Operation

66 kHz Operation

M ≤ IM(DC)

M = 190 µA

J = 25 °C; DCMIN to DCMAX

Storage Temperature ..................................... -65 to 150

°C

Operating Junction Temperature(2) ................ -40 to 150

°C

Lead Temperature(3) ................................................ 260

°C

Notes:

1. All voltages referenced to SOURCE, T

A = 25 °C.

2. Normally limited by internal circuitry.

3. 1/16" from case for 5 seconds.

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