TL598 Datasheet, PDF (2/10 Pages) Texas Instruments – PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL598
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS053C – FEBRUARY 1988 – REVISED JULY 1999
FUNCTION TABLE
INPUT/OUTPUT
CTRL
OUTPUT FUNCTION
VI = GND
VI = REF
Single-ended or parallel output
Normal push-pull operation
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
SMALL
OUTLINE
(D)
0°C to 70°C
TL598CD
–40°C to 125°C
TL598QD
Chip forms are tested at 25°C.
PLASTIC
DIP
(N)
TL598CN
–
CHIP FORM
(Y)
TL598Y
functional block diagram
6
RT ₅
CT
≈ 0.1 V
DTC ⁴
Oscillator
DTC
Comparator
Error Amplifier
1
1IN+
+
2
1IN–
1
–
2IN+
2IN–
16 ^{Error Amplifier}
+
15
–2
3
FEEDBACK
PWM
Comparator
Reference
Regulator
OUTPUT CTRL
(see Function Table)
13
1D
C1
Pulse-Steering
Flip-Flop
Undervoltage
Lockout Control
0.7 mA
11 _VC
8 _OUT1
9 _OUT2
10 _POWER
GND
12 _VCC
14 _REF
7 _SIGNAL
GND
2
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