CMOS CURRENT MODE
PWM CONTROLLERS
TC18C46
TC28C46
TC38C46
ELECTRICAL CHARACTERISTICS:
unless otherwise stated, these specifications apply for T
A
= – 55°C to
+125°C for TC18C46; – 40°C to +85°C for the TC28C46; and 0°C to +70°C for the TC38C46; V
IN
= V
DD
= 16V;
R
T
= 30.1k; C
T
= 270pF.
TC18C46
TC28C46
Parameter
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temp Coefficient
Total Output Range
Long Term Drift
Short Circuit
Output Current
Output Noise Voltage
T
f
= 25°C, I
O
= 1mA
V
IN
= 8V to 16V
I
O
= 1mA to 10mA
Over Operating Range, (Note 1)
Line, Load, and Temperature (Note 1)
T
f
= 125°C, 1000 Hrs (Note 1)
V
REF
= 0V
10 Hz
≤
f
≤
10 kHz, Tf = 25°C (Note 1)
T
f
= 25°C
V
IN
= 8V to 16V
Over Operating Range (Note 1)
5.0
—
—
—
4.97
—
20
—
96.5
—
—
1.2
3.6
V
DD
–0.5
—
—
—
—
—
—
—
70
0.7
70
70
2
5
4.75
—
1.3
5.1
4
4
0.2
—
50
—
22
102
.1
.04
2
3.8
—
—
8.5
8.5
±5
±5
±10
±10
90
1
90
90
4
10
4.9
0.4
2
5.2
20
20
0.5
5.24
—
70
—
106.5
2.0
0.06
3
4
—
0.5
—
5
50
±25
±100
±100
—
—
—
—
—
—
5.1
0.9
—
5.0
—
—
—
4.94
—
20
—
96.5
—
—
1.2
3.6
V
DD
–0.5
—
—
—
—
—
—
—
70
0.7
70
70
2
5
4.75
—
1.3
5.1
4
4
0.2
—
50
—
22
101
.1
.04
2
3.8
—
—
8.5
8.5
±5
±5
±0.1
±0.1
90
1
90
90
4
10
4.9
0.4
2
5.2
20
20
0.5
5.26
—
70
—
106.5
1.5
0.06
3
4
—
0.5
—
5
50
±25
±0.5
±0.5
—
—
—
—
—
—
5.1
0.9
—
V
mV
mV
mV/°C
V
mV
mA
µV(rms)
kHz
%/V
%/°C
mA
V
V
V
V
V
nA
mV
nA
nA
dB
MHz
dB
dB
mA
mA
V
V
V/µsec
1
2
Units
TC38C46
Max
Min
Typ
Max
Test Conditions
Min
Typ
3
4
5
6
7
Oscillator Section
Initial Accuracy
Voltage Coefficient
Temp Coefficient
Clock Ramp
Reset Current
Osc Ramp Amplitude
Sync Output High Level
Sync Output Low Level
Sync Input High Level
Sync Input Low Level
Sync Input Current
(Note 1)
(Note 1)
Pin 8 = 0V, (Note 1)
Pin 8 = 0V, (Note 1)
Sync Voltage = 5.25V, Pin 8 = 0V
Error Amp Section
Input Offset Voltage
Input Bias Current
Input Offset Current
Open Loop Voltage Gain
Gain Bandwidth Product
CMRR
PSRR
Output Sink Current
Output Source Current
High Level Output Volt
Low Level Output Volt
Slew Rate
∆V
O
= 1V to 6V, R
L
= 100k
T
f
= 25°C (Note 1)
V
CM
= 0V to 11V
V
IN
= 8V to 16V
V(EA –) = 5V, V(EA+) = 4.9V,
V(CMPTR) = 1.2V
V(EA –) = 5V, V(EA+) = 5.1V,
V(CMPTR) = 2.5V
R
L
= (CMPTR) 5kΩ to GND, A
CL
= 300
R
L
= (CMPTR) 5kΩ to GND, A
CL
= 300
8
TELCOM SEMICONDUCTOR, INC.
4-103
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
