Semiconductor Components Industries, LLC, 1999
October, 1999 – Rev. 3 1Publication Order Number:
MC33465/D
MC33465
Micropower Undervoltage
Sensing Circuits with
Programmable Output Delay
The MC33465 series are micropower undervoltage sensing circuits
that are specifically designed for use with battery powered
microprocessor based systems, where extended battery life is required.
A choice of several threshold voltages from 0.9 V to 4.5 V are
available. This device features a very low quiescent bias current of 1.0
µA typical.
The MC33465 series features a highly accurate voltage reference, a
comparator with precise thresholds and built–in hysteresis to prevent
erratic reset operation, a choice of output configurations between open
drain or complementary, a time delayed output, which can be
programmed by the system designer, and guaranteed operation below
1.0 V with extremely low standby current. This device is available in a
SOT–23 5–pin surface mount package.
Applications include direct monitoring of the MPU/logic power
supply used in appliance, automotive, industrial and portable
equipment.
Features:
•Extremely Low Standby Current of 1.0 µA at Vin = 3.5 V
•Wide Input Voltage Range (0.7 V to 10 V)
•Monitors Power Supply Voltages from 1.1 V to 5.0 V
•High Accuracy Detector Threshold (±2.5%)
•Two Reset Output Types (Open Drain or Complementary Drive)
•Programmable Output Delay by External Capacitor
(100 ms typ. with 0.15 µF)
•Surface Mount Package (SOT–23 5–Pin)
•Convenient Tape and Reel (3000 per Reel)
Representative Block Diagrams
This device contains 28 active transistors.
MC33465N–YYATR
Open Drain Output Configuration MC33465N–YYCTR
Complementary Output Configuration
YY Denotes Threshold Voltage
Vref
2 Input
1
Reset
3 Gnd 5C
D
RD
Vref
2 Input
3 Gnd 5C
D
RD
1 Reset
SOT–23–5
N SUFFIX
CASE 1212
http://onsemi.com
PIN CONNECTIONS
5
1
15
4
2
3
(Top View)
Reset
Input
Ground
CD
N/C
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
ORDERING INFORMATION
MC33465
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2
MAXIMUM RATINGS
Rating Symbol Value Unit
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Power Input Supply Voltage
ÁÁÁÁ
ÁÁÁÁ
Vin
ÁÁÁÁÁ
ÁÁÁÁÁ
0 to 12
ÁÁÁ
ÁÁÁ
V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Reset Output Voltage
ÁÁÁÁ
ÁÁÁÁ
VO
ÁÁÁÁÁ
ÁÁÁÁÁ
–0.3 to 12
ÁÁÁ
ÁÁÁ
V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Reset Output Current (Source or Sink)
ÁÁÁÁ
ÁÁÁÁ
IO
ÁÁÁÁÁ
ÁÁÁÁÁ
70
ÁÁÁ
ÁÁÁ
mA
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Power Dissipation and Thermal Characteristics
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁ
ÁÁÁ
Maximum Power Dissipation at TA = 25°C PD150 mW
Case 1212 (SOT–23) N Suffix
Thermal Resistance, Junction–to–Ambient RθJA 667 °C/W
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Operating Junction Temperature
ÁÁÁÁ
ÁÁÁÁ
TJ
ÁÁÁÁÁ
ÁÁÁÁÁ
+125
ÁÁÁ
ÁÁÁ
°C
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Operating Ambient Temperature
ÁÁÁÁ
ÁÁÁÁ
TA
ÁÁÁÁÁ
ÁÁÁÁÁ
–40 to +85
ÁÁÁ
ÁÁÁ
°C
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Storage Temperature Range
ÁÁÁÁ
ÁÁÁÁ
Tstg
ÁÁÁÁÁ
ÁÁÁÁÁ
–40 to +125
ÁÁÁ
ÁÁÁ
°C
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lead Temperature (Soldering)
ÁÁÁÁ
ÁÁÁÁ
Tsolder
ÁÁÁÁÁ
ÁÁÁÁÁ
260°C, 10 s
ÁÁÁ
ÁÁÁ
MC33465
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3
ELECTRICAL CHARACTERISTICS (For all values TA = 25°C (Note 1), unless otherwise noted.)
Characteristic Symbol Min Typ Max Unit
SENSE COMPARATOR
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Threshold Voltage
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁ
V
High to Low State Output (Vin Decreasing) VIL
09 Suffix 0.878 0.9 0.922
20 Suffix 1.950 2.0 2.050
22 Suffix 2.145 2.2 2.255
27 Suffix 2.633 2.7 2.767
28 Suffix 2.730 2.8 2.870
30 Suffix 2.925 3.0 3.075
32 Suffix 3.120 3.2 3.280
34 Suffix 3.315 3.4 3.485
38 Suffix 3.705 3.8 3.895
43 Suffix 4.193 4.3 4.407
44 Suffix 4.290 4.4 4.510
45 Suffix 4.387 4.5 4.612
46 Suffix 4.485 4.6 4.715
47 Suffix 4.583 4.7 4.817
Threshold Hysteresis (Vin Increasing) VHV
09 Suffix 0.027 0.045 0.063
20 Suffix 0.060 0.100 0.140
22 Suffix 0.066 0.110 0.154
27 Suffix 0.081 0.135 0.189
28 Suffix 0.084 0.140 0.196
30 Suffix 0.090 0.150 0.210
32 Suffix 0.096 0.160 0.224
34 Suffix 0.102 0.170 0.238
38 Suffix 0.114 0.190 0.266
43 Suffix 0.129 0.215 0.301
44 Suffix 0.132 0.220 0.308
45 Suffix 0.135 0.225 0.315
46 Suffix 0.138 0.230 0.322
47 Suffix 0.141 0.235 0.329
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Threshold Voltage Temperature Coef ficient
ÁÁÁÁÁ
ÁÁÁÁÁ
TC
ÁÁÁÁ
ÁÁÁÁ
–
ÁÁÁÁ
ÁÁÁÁ
±100
ÁÁÁÁ
ÁÁÁÁ
–
ÁÁÁ
ÁÁÁ
PPM/°C
RESET OUTPUT
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Output Voltage
ÁÁÁÁÁ
ÁÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁ
V
High State (Complementary Output: Isource = 1.0 mA) VOH Vin – 2.1 Vin – 1.0 Vin
Low State (Complementary or Open Drain Output: Isink = 1.0 mA) VOL – 0.25 0.5
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Output Sink Current (V in = 1.5 V, VOL = 0.5 V)
ÁÁÁÁÁ
ÁÁÁÁÁ
IOL
ÁÁÁÁ
ÁÁÁÁ
1.0
ÁÁÁÁ
ÁÁÁÁ
2.0
ÁÁÁÁ
ÁÁÁÁ
–
ÁÁÁ
ÁÁÁ
mA
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Output Source Current (Vin = 4.5 V, VOH = 2.4 V)
ÁÁÁÁÁ
ÁÁÁÁÁ
IOH
ÁÁÁÁ
ÁÁÁÁ
1.0
ÁÁÁÁ
ÁÁÁÁ
2.0
ÁÁÁÁ
ÁÁÁÁ
–
ÁÁÁ
ÁÁÁ
mA
DELAY OUTPUT
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Output Sink Current (V in = 1.5 V, VOL = 0.5 V)
ÁÁÁÁÁ
ÁÁÁÁÁ
IOL
ÁÁÁÁ
ÁÁÁÁ
0.2
ÁÁÁÁ
ÁÁÁÁ
0.8
ÁÁÁÁ
ÁÁÁÁ
–
ÁÁÁ
ÁÁÁ
mA
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Delay Resistance
ÁÁÁÁÁ
ÁÁÁÁÁ
RD
ÁÁÁÁ
ÁÁÁÁ
0.5
ÁÁÁÁ
ÁÁÁÁ
1.0
ÁÁÁÁ
ÁÁÁÁ
2.0
ÁÁÁ
ÁÁÁ
MΩ
TOTAL DEVICE
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Operating Input Voltage Range
ÁÁÁÁÁ
ÁÁÁÁÁ
Vin
ÁÁÁÁ
ÁÁÁÁ
0.8 to 10
ÁÁÁÁ
ÁÁÁÁ
–
ÁÁÁÁ
ÁÁÁÁ
–
ÁÁÁ
ÁÁÁ
V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Quiescent Input Current
ÁÁÁÁÁ
ÁÁÁÁÁ
Iin
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁÁ
ÁÁÁ
ÁÁÁ
µA
Vin = 4.34 V – 5.5 11
Vin = 6.50 V – 1.3 3.9
NOTE: 1.Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
MC33465
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4
V
i
n, INPUT VOLTAGE (V)
IO, OUTPUT SINK CURRENT (mA)
V
i
n, INPUT VOLTAGE (V)
IO, OUTPUT CURRENT (mA) Vin, INPUT THRESHOLD VOLT AGE (V)
Vin, INPUT VOLTAGE (V)
0
4.0
–40
3.0
0
7.0
0
12
0
8.0
0
16
TA, AMBIENT TEMPERATURE (°C)
Vin, INPUT VOLTAGE (V)
I
in
,
SUPPL
Y
C
U
RR
E
N
T
(
A
)I
O
,
OUTPUT S
IN
K
C
U
RR
E
N
T
(
mA
)
Figure 1. Reset Low State Sink Current versus
Output Voltage
VOL, LOW STATE OUTPUT VOLTAGE (V)
Figure 2. Output Voltage versus Input Voltage
MC33465N–45ATR
TA = 20°C
Figure 3. Input Current versus Input Voltage Figure 4. Comparator Input Threshold Voltage
versus Temperature
Figure 5. Reset Output Sink Current
versus Input Voltage Figure 6. Reset Output Source Current
versus Input Voltage
3.5
2.9
6.0
6.0
14
2.5
2.8
4.0
10
4.0
10
1.5
2.7
2.0
6.0
2.0
6.0
0
2.6
0
2.0
0
0
0
0.5 1.0 1.5 2.0 2.5 3.0 1.0 2.0 3.0 4.0 6.0
–202.0
2.0
04.0 206.0
4.0
40
2.0
8.0
8.0 12
80
3.0
10
TA = 25°C
TA = –30°C
TA = 80°C
MC33465N–45ATR
2.0
5.0
0.5
6.0 10
VO, OUTPUT VOLTAGE (V)
µ
25°C
–30°C
80°C
TA = –30°C
25°C
80°C
TA = 25°C
TA = –30°C
TA = 80°C
30°C
80°C, 20°C
MC33465N–45ATR
470 kΩ Pull–up
MC33465N–27ATR
VIL + VH
VIL
MC33465N–27ATR
VOL = 0.5 V MC33465N–27CTR Vin – VO = 2.1 V
Vin – VO = 1.5 V
Vin – VO = 1.0 V
Vin – VO = 0.5 V
2.85
5.0
5.0
12
2.75
3.0
3.0
8.0
2.65
1.0
1.0
4.0
3.0
2.0
8.0
1.0
4.0
7.0
1.5 2.50.5 1.0
60
VH
Vin = 2.5 V
2.0 V
1.5 V
MC33465
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5
Vin, INPUT VOLTAGE (V)
C
D
,
S
IN
K
C
U
RR
E
N
T
(
mA
)
0
12 Figure 7. CD Sink Current versus Input Voltage
10
8.0
6.0
00.5 1.0 1.5 2.0 3.0
TA = –30°C
4.0
2.5 VCD, VOLTAGE (V)
Isink, SINK CURRENT (mA)
0
16 Figure 8. CD Sink Current versus CD Voltage
12
8.0
4.0
00.5 1.0 1.5 2.0 3.
0
Vin = 2.5 V
2.0
2.5
TA, AMBIENT TEMPERATURE (°C)
R
D
,
DELA
Y
R
ES
I
STA
NC
E
(
M
)
–40
1.8 Figure 9. Delay Resistance versus Temperature
1.4
1.0
0.8
0.4 –20 0 20 40 80
0.6
60
V
–40
1.9
Figure 10. Detector Threshold versus Temperatur
e
1.7
1.5
1.4
1.2 –20 0 20 40 80
MC33465N–27ATR
1.3
60
CD, DELAY CAPACITANCE (µF)
0.0001
1000
Figure 11. Output Delay Time versus
Delay Capacitance
100
10
1.0
0.01 0.001 0.01 0.1
0.1
25°C
80°C
MC33465N–27ATR
VOL = 0.5 V
2.0
14
10
6.0 Vin = 2.0 V
Vin = 1.5 V
1.6
1.2
Ω
TA, AMBIENT TEMPERATURE (°C)
Vin = 2.97 V
1.8
1.6
tD: Output Switch
Low to High
tPHL: Output Switch
High to Low
tp, OUTPUT DELAY TIME (ms)
th(D), DETECT OR THRESHOLD VOLT AGE (V)
1
MC33465
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6
Figure 12. Typical Open Drain Application
2 Input
1
Reset
Gnd Gnd
R
VDD
Reset
VDD
CPU
5
CD
CD
MC33465
Series
Figure 13. Typical Complementary Output Application
2 Input
1
Reset
Gnd Gnd
VDD
Reset
VDD
CPU
5
CD
CD
MC33465
Series
3
3
APPLICATION CIRCUIT INFORMATION
The MC33465 series are micropower undervoltage
sensing circuits which offer a programmable time delayed
output with the choice of either complementary output drive
or open drain output configurations. Figure 14 shows the
timing relationships between the input voltage and the
resulting circuit waveforms. When the input voltage (Vin)
exceeds the sense comparator threshold, the timing
capacitor
is allowed to charge through the internal delay
resistor. When the output inverting driver threshold is
exceeded, the Reset output switches from a logic “0” to a
logic “1”. The top curve of Figure 11 provides the nominal
delay time for a given value of delay capacitance. When V in
drops below the comparator threshold minus hysteresis
voltage, the delay capacitor discharges. When the
capacitance voltage drops below the inverting drive
threshold, the output switches from a logic “1” to a logic “0”.
The bottom curve in Figure 11 provides typical delay time
for given delay capacitance values. The inverting driver
threshold voltage is typically about Vin/2, as shown in
Figure 10.
MC33465
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7
Figure 14. Timing Waveforms
tD
Vin
VIL + VH
VIL
Input V oltage
Delay Capacitor
Vin
0 V
Reset Output
tD
L–H L–H
tD
H–L
tD
H–L
ORDERING INFORMATION
Device Threshold
Voltage Type Marking Package Package
MC33465N–09ATR 0.9 A9
MC33465N–20ATR 2.0 C0
MC33465N–22ATR 2.2 C2
MC33465N–27ATR 2.7 C7
MC33465N–28ATR 2.8
p
D8
MC33465N–30ATR 3.0
D0
MC33465N–32ATR 3.2
D2
MC33465N–34ATR 3.4
D4
MC33465N–38ATR 3.8 D8
SOT 23
MC33465N–45ATR 4.5 E5
SOT
–
23
5–Lead
3000 Tape & Reel
MC33465N–46ATR 4.6 E6
5
–
Lead
MC33465N–47ATR 4.7 E7
MC33465N–09CTR 0.9 9A
MC33465N–20CTR 2.0 0C
MC33465N–27CTR 2.7 Compl. 7C
MC33465N–30CTR 3.0 MOS 0D
MC33465N–43CTR 4.3 Reset 3E
MC33465N–44CTR 4.4 4E
MC33465N–45CTR 4.5 5E
Other voltages from 0.9 to 6.0 V , in 0.1 V increments, are available. Consult factory for information.
MC33465
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8
PACKAGE DIMENSIONS
(SOT–23)
N SUFFIX
PLASTIC PACKAGE
CASE 1212–01
ISSUE O
DIM MIN MAX
MILLIMETERS
A1 0.00 0.10
A2 1.00 1.30
B0.30 0.50
C0.10 0.25
D2.80 3.00
E2.50 3.10
E1 1.50 1.80
e0.95 BSC
e1 1.90 BSC
L
L1 0.45 0.75
NOTES:
1. DIMENSIONS ARE IN MILLIMETERS.
2. INTERPRET DIMENSIONS AND TOLERANCES
PER ASME Y14.5M, 1994.
3. DATUM C IS A SEATING PLANE.
A
1
5
23
4
D
E1
B
L1
E
e
e1
C
M
0.10 C S
BS
A
B5X
A2
A1
S
0.05
C
L
0.20 –––
SOT–23–5
2.4
1.0
0.7 MAX.
0.950.95 1.9 (Unit: mm)
Recommended Footprint for Surface Mount Applications
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MC33465/D