ꢀ ꢁ ꢂꢂ ꢃꢄ ꢂ ꢅ ꢆ ꢀ ꢁꢂꢇ ꢃ ꢄ ꢂ ꢅ
ꢏ
ꢈꢉ
ꢊꢋ
ꢅ
ꢌ
ꢍ
ꢅ
ꢎ
ꢐ
ꢐ
ꢑ
ꢒ
ꢓ
ꢏ
ꢔꢁ
ꢎꢓ
ꢕ
ꢖ
ꢗꢍ
ꢘꢒ
ꢕ
ꢖ
ꢙ
ꢑ
ꢚ
ꢕ
ꢒ
ꢁ
ꢛ
ꢕ
ꢖ
ꢙ
ꢘꢍ
ꢙ
ꢔ
ꢜ
ꢅꢒꢐ
ꢘ
ꢑ
SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
functional block diagram
8
1
Drive
Switch
Collector
Collector
Q2
S
Q
Q1
R
100 Ω
7
2
3
4
I
Switch
Emitter
pk
Sense
I
pk
Oscillator
C
T
6
Timing
Capacitor
V
CC
1.25-V
Reference
Regulator
+
_
Comparator
Inverting
Input
5
GND
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
CC
Comparator Inverting Input voltage range, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 40 V
Switch Collector voltage, V
Switch Emitter voltage (V
Switch Collector to Switch Emitter voltage, V
IR
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
C(switch)
PIN1
= 40 V), V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
E(switch)
CE(switch)
Driver Collector voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A
C(driver)
C(driver)
Driver Collector current, I
Switch current, I
SW
Package thermal impedance, θ (see Notes 1 and 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
JA
DRJ package . . . . . . . . . . . . . . . . . . . . . . . TBD°C/W
P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W
Operating virtual junction temperature, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
J
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
stg
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. Maximum power dissipation is a function of T (max), θ , and T . The maximum allowable power dissipation at any allowable
JA
J
A
ambient temperature is P = (T (max) − T )/θ . Operating at the absolute maximum T of 150°C can affect reliability.
D
J
A
JA
J
2. The package thermal impedance is calculated in accordance with JESD 51-7.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
