TOP232-234
ABSOLUTE MAXIMUM RATINGS(1)
DRAIN Voltage ............................................ -0.3 to 700 V
DRAIN Peak Current: TOP232 .................................0.8 A
TOP233 .................................1.6 A
Storage Temperature ..................................... -65 to 150 °C
Operating Junction Temperature(2) ................ -40 to 150 °C
Lead Temperature(3) ................................................ 260 °C
TOP234 .................................2.4 A
Notes:
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
1. All voltages referenced to SOURCE, TA = 25 °C.
2. Normally limited by internal circuitry.
3. 1/16" from case for 5 seconds.
THERMAL IMPEDANCE
Thermal Impedance: Y Package (θJA)(1) ............... 70 °C/W
Notes:
(θJC)(2) ................. 2 °C/W
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.
P/G Package:
(θJA) ........ 45 °C/W(3); 35 °C/W(4)
(θJC)(5) .......................... 11 °C/W
Conditions
(Unless Otherwise Specified)
See Figure 34
Parameter
Symbol
Min
Typ Max
Units
SOURCE = 0 V; TJ = -40 to 125 °C
CONTROL FUNCTIONS
FREQUENCY Pin
Connected to SOURCE
124
132
66
140
Switching
IC = 4 mA;
TJ = 25 °C
kHz
kHz
fOSC
Frequency
FREQUENCY Pin
Connected to CONTROL
(average)
61.5
70.5
132 kHz Operation
66 kHz Operation
4
2
Frequency Jitter
Deviation
∆f
Frequency Jitter
fM
250
Hz
%
Modulation Rate
IM ≤ IM(DC)
75.0
35.0
78.0
47.0
82.0
57.0
Maximum Duty
DCMAX
IC = ICD1
Cycle
IM = 190 µA
Minimum Duty
DCMIN
0.8
1.5
2.7
Cycle (Prior to
%
Cycle Skipping)
tSOFT
ms
TJ = 25 °C; DCMIN to DCMAX
10
14
Soft Start Time
PWM
Gain
-27
-22
-17
%/mA
IC = 4 mA; TJ = 25 °C
B
7/01
24
PAM [ POWER ANALOG MICOELECTRONICS ]
