UAA2016
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2
MAXIMUM RATINGS (Voltages referenced to Pin 7)
Rating
Symbol Value Unit
Supply Current (I
Pin 5
) I
CC
15 mA
Non−Repetitive Supply Current, (Pulse Width = 1.0 ms)
I
CCP
200 mA
AC Synchronization Current I
sync
3.0 mA
Pin Voltages V
Pin
2
V
Pin
3
V
Pin
4
V
Pin
6
0; V
ref
0; V
ref
0; V
ref
0; V
EE
V
V
ref
Current Sink I
Pin
1
1.0 mA
Output Current (Pin 6), (Pulse Width < 400 ms)
I
O
150 mA
Power Dissipation P
D
625 mW
Thermal Resistance, Junction−to−Air
R
q
JA
100 °C/W
Operating Temperature Range T
A
− 20 to + 85 °C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
ELECTRICAL CHARACTERISTICS (T
A
= 25°C, V
EE
= −7.0 V, voltages referred to Pin 7, unless otherwise noted.)
Characteristic Symbol Min Typ Max Unit
Supply Current (Pins 6, 8 not connected), (T
A
= − 20° to + 85°C) I
CC
− 0.9 1.5 mA
Stabilized Supply Voltage (Pin 5), (I
CC
= 2.0 mA) V
EE
−10 −9.0 −8.0 V
Reference Voltage (Pin 1) V
ref
−6.5 −5.5 −4.5 V
Output Pulse Current (T
A
= − 20° to + 85°C), (R
out
= 60 W, V
EE
= − 8.0 V) I
O
90 100 130 mA
Output Leakage Current (V
out
= 0 V) I
OL
− − 10
mA
Output Pulse Width (T
A
= − 20° to + 85°C) (Note 1), (Mains = 220 Vrms, R
sync
= 220 kW)
T
P
50 − 100
ms
Comparator Offset (Note 5) V
off
−10 − +10 mV
Sensor Input Bias Current I
IB
− − 0.1
mA
Sawtooth Period (Note 2) T
S
− 40.96 − sec
Sawtooth Amplitude (Note 6) A
S
50 70 90 mV
Temperature Reduction Voltage (Note 3), (Pin 4 Connected to V
CC
) V
TR
280 350 420 mV
Internal Hysteresis Voltage, (Pin 2 Not Connected) V
IH
− 10 − mV
Additional Hysteresis (Note 4), (Pin 2 Connected to V
CC
) V
H
280 350 420 mV
Failsafe Threshold (T
A
= − 20° to + 85°C) (Note 7) V
FSth
180 − 300 mV
1. Output pulses are centered with respect to zero crossing point. Pulse width is adjusted by the value of R
sync
. Refer to application curves.
2. The actual sawtooth period depends on the AC power line frequency. It is exactly 2048 times the corresponding period. For the 50 Hz case
it is 40.96 sec. For the 60 Hz case it is 34.13 sec. This is to comply with the European standard, namely that 2.0 kW loads cannot be connected
or removed from the line more than once every 30 sec. The inertia of most heating systems combined with the UAA2016 will comply with
the European Standard.
3. 350 mV corresponds to 5°C temperature reduction. This is tested at probe using internal test pad. Smaller temperature reduction can be
obtained by adding an external resistor between Pin 4 and V
CC
. Refer to application curves.
4. 350 mV corresponds to a hysteresis of 5°C. This is tested at probe using internal test pad. Smaller additional hysteresis can be obtained
by adding an external resistor between Pin 2 and V
CC
. Refer to application curves.
5. Parameter guaranteed but not tested. Worst case 10 mV corresponds to 0.15°C shift on set point.
6. Measured at probe by internal test pad. 70 mV corresponds to 1°C. Note that the proportional band is independent of the NTC value.
7. At very low temperature the NTC resistor increases quickly. This can cause the sensor input voltage to reach the failsafe threshold, thus inhibiting
output pulses; refer to application schematics. The corresponding temperature is the limit at which the circuit works in the typical application.
By setting this threshold at 0.05 V
ref
, the NTC value can increase up to 20 times its nominal value, thus the application works below − 20°C.
