IMP IMP6303JEUR-T 3-pin microcontroller power supply supervisor Datasheet

IMP6303
POWER MANAGEMENT
Key Features
3-Pin Microcontroller
Power Supply Supervisor
◆ Monitor 4.0V supply
The IMP6303 is a 4.0V power supply supervisor circuits optimized for lowpower microprocessor (µP), microcontroller (µC) and digital systems.
◆ Active-low reset valid with 1.1V supply
A reset signal is issued if the power supply voltage drops below a preset
reset threshold and is asserted for at least 140ms after the supply has
risen above the reset threshold. The IMP6303 has an active-low RESET
output that is guaranteed to be in the correct state for VCC down to 1.1V.
The reset comparator is designed to ignore fast transients on VCC.
Low supply current makes the IMP6303 ideal for use in portable and
battery operated equipment. The IMP6303 is available in a compact 3-pin
SOT23, TO-92 and 5 pin SOT23-5 packages.
◆ 140ms min. reset pulse width
◆ Small 3-pin SOT-23 package
◆ Small 3-pin TO-92 package
◆ Small 5-pin SOT-23-5 package
◆ No external components
◆ Specified over full temperature range
— – 40°C to 105°C
Applications
◆
◆
◆
◆
◆
Embedded controllers
Battery operated systems
Intelligent instruments
Wireless communication systems
PDAs and handheld equipment
Block Diagrams
VCC
VCC
IMP6303
VCC
µP
RESET
(RESET)
GND
RESET
Input
GND
6303_01.eps
© 2001 IMP, Inc.
408-432-9100/www.impweb.com
1
IMP6303
Pin Configuration
SOT-23
TO-92
(RESET) RESET 1
SOT-23-5
IMP6303
1
IMP6303
2
NC
1
GND
2
NC
3
3
5
VCC
4
RESET (RESET)
IMP6303
3 GND
VCC 2
VCC
GND
6303_07.eps
RESET (RESET)
6303_06.eps
6303_02.eps
Ordering Information
1
Part Number
Reset Threshold (V)
IMP6303 Active LOW Reset
IMP6303JEUR-T
Notes:
4.00
Temperature Range
Pin-Package
Package Marking2
(XX Lot Code)
– 40°C to +105°C
3-SOT23
CWXX
1. Tape and Reel packaging is indicated by the -T designation.
2. Devices may also be marked with full part number: 6303L, 6303M etc. XX refers to lot.
Related Products
Max. Supply Current
Package Pins
Package Type
Active-LOW RESET output
2
IM6303
IMP6303
IMP6303
15µA
3
SOT-23
■
15µA
3
TO-92
■
15µA
5
SOT-23-5
■
408-432-9100/www.impweb.com
© 2001 IMP, Inc.
S
IMP6303
Absolute Maximum Ratings
Pin Terminal Voltage with Respect to Ground
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to 6.0V
RESET, RESET . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to (VCC + 0.3V)
Input Current at VCC . . . . . . . . . . . . . . . . . . . 20mA
Output Current: RESET, RESET . . . . . . . . . 20mA
Rate of Rise at VCC . . . . . . . . . . . . . . . . . . . . 100V/µs
Power Dissipation (TA = 70°C) . . . . . . . . . . 320mW
(Derate 4mW/°C above 70°C)
Operating Temperature Range . . . . . . . . . . –40°C to 105°C
Storage Temperature Range . . . . . . . . . . . . . –65°C to 160°C
Lead Temperature (soldering, 10 sec) . . . . . 300°C
These are stress ratings only and functional operation is not implied.
Exposure to absolute maximum ratings for prolonged time periods may
affect device reliability
Electrical Characteristics
Unless otherwise noted VCC is over the full voltage range, TA = –40°C to 105°C.
Typical values at TA = 25°C, VCC = 5V for L/M/J devices.
Parameter
Symbol Conditions
Input Voltage (VCC) Range
VCC
Supply Current
Reset Threshold
ICC
VTH
Reset Threshold Stability
VCC to Reset Delay
Reset Active Timeout Period
VOL
Low RESET Output Voltage
VOL
High RESET Output Voltage
VOH
Notes:
TA = 0°C to 70°C
TA = – 40°C to 105°C
TA = – 40°C to 85°C
Min
Typ
Max
Units
V
9
4.00
5.5
5.5
15
4.06
4.10
4.20
1.1
1.2
VCC < 4.0V
TA = 25°C
TA = – 40°C to 85°C
TA = 85°C to 105°C
VCC = VTH to VTH - 100mV
TA = – 40°C to 85°C
TA = 85°C to 105°C
VCC = VTH min., ISINK = 1.2mA
VCC = VTH min., ISINK = 3.2mA
VCC > 1.1V, ISINK = 50µA
VCC > VTH max., ISOURCE = 500µA
VCC > VTH max., ISOURCE = 800µA
3.93
3.89
3.80
140
100
30
20
240
0.3
0.8VCC
VCC -1.5
560
840
V
0.4
0.3
µA
ppm/°C
µs
ms
V
1. Production testing done at TA = 25°C. Over-temperature specifications guaranteed by design only.
2. RESET output is active LOW for the IMP6303.
© 2001 IMP, Inc.
Microprocessor Supervisor
3
IMP6303
Pin Descriptions
Name
Function
GND
Ground
RESET
RESET is asserted LOW if VCC falls below the reset threshold and remains LOW for the
240ms typical reset timeout period (140ms minimum) after VCC exceeds the threshold.
VCC
Power supply input voltage.
Detailed Descriptions
Reset Timing
The reset signal is asserted–LOW when the VCC signal falls below
the threshold trip voltage and remains asserted for 140ms minimum after the VCC has risen above the threshold.
5V
VCC
VTH
Active Reset
Timeout Period
0V
140ms
minimum
5V
RESET
IMP6303
0V
6303_03.eps
Figure 1. Reset Timing Diagram
4
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© 2001 IMP, Inc.
S
IMP6303
Application Information
Negative VCC Transients
The IMP6303 protect µPs from brownouts and low VCC. Short duration transients of 100mV amplitude and 20µs or less duration typically do not cause a false RESET.
Valid Reset with VCC under 1.1V
Bi-directional Reset Pin Interfacing
To ensure logic inputs connected to the IMP6303 RESET pin are in
a known state when VCC is under 1.1V, a 100kΩ pull-down
resistor at RESET is needed. The value is not critical.
The IMP6303 can interface with µP/µC bi-directional reset pins
by connecting a 4.7kΩ resistor in series with the IMP6303 reset
output and the µP/µC bi-directional reset pin.
BUF
Buffered
RESET
VCC
VCC
Power
Supply
IMP6303
Power
Supply
IMP6303
µC or µP
4.7kΩ
RESET
RESET
GND
100kΩ
RESET
Input
GND
GND
Bi-directional I/O Pin
(Example: 68HC11)
6303_06.eps
6303_04.eps
Figure 2. RESET Valid with VCC Under 1.1V
© 2001 IMP, Inc.
Figure 3. Bi-directional Reset Pin Interfacing
Microprocessor Supervisor
5
IMP6303
Package Dimensions
Inches
Min
A
A1
A2
b
c
D
E
E1
e
e1
L
L1
ø
b
E
e
D
C
∅
A A2
A1
e1
L
L1
SOT-23 (3-Pin).eps
A
B
L
M
Section
A-A
C
D
J
Section
A-A
F
0.035
0.044
0.0004
0.004
0.035
0.040
0.012
0.020
0.003
0.008
0.110
0.120
0.083
0.104
0.047
0.055
0.37 BSC
0.07 BSC
0.016
0.024
0.021 REF
0°
8°
K
A
B
C
D
E
F
G
H
I
J
K
L
0.175
0.170
0.500
0.016
0.095
0.045
0.45
0.085
0.130
0.014
0.093
45°
Max
0.89
0.01
0.88
0.30
0.08
2.80
2.10
1.20
1.12
0.10
1.02
0.50
0.20
3.04
2.64
1.40
0.95 BSC
1.90 BSC
0.40
0.60
0.54 REF
0°
8°
4.45
4.32
12.70
0.406
2.41
1.14
1.14
2.16
3.30
0.35
2.36
45°
4.95
4.96
15.49
0.559
2.67
1.52
1.52
2.41
3.94
0.51
2.92
60°
0.118 Typical
A
A1
A2
b
c
D
E
E1
e
e1
L
L1
∅
0.037
0.057
0.001
0.005
0.035
0.050
0.011
0.019
0.003
0.007
0.109
0.117
0.101
0.117
0.058
0.066
0.037 BSC
0.074 BSC
0.013
0.021
0.002 REF
0°
8°
3.00
Plastic SOT-23** (5-Pin)
G
2
0.195
0.192
0.610
0.022
0.105
0.60
0.060
0.095
0.155
0.020
0.115
60°
M
E
1
Min
TO-92 (3-Pin)
Plastic TO-92 (3-Pin)
D
Max
Plastic SOT-23* (3-Pin)
Plastic SOT-23 (3-Pin)
E1
Millimeters
I
3
Bottom View
H
TO-92.eps
Plastic SOT-23 (5-Pin)
D
e1
E1
e
E
0.95
0.05
0.90
0.30
0.08
2.80
2.60
1.50
1.45
0.15
1.30
0.50
0.20
3.00
3.00
1.70
0.95 BSC
1.90 BSC
0.35
0.55
0.60 REF
0°
8°
b
1811_t04.eps
A A2
A1
C
∅
L
L1
6
SOT-23 (5-Pin).eps
408-432-9100/www.impweb.com
© 2001 IMP, Inc.
S
IMP6303
© 2001 IMP, Inc.
Microprocessor Supervisor
7
IMP6303
IMP, Inc.
Corporate Headquarters
2830 N. First Street
San Jose, CA 95134-2071
Tel: 408-432-9100
Fax: 408-434-5904
e-mail: [email protected]
http://www.impweb.com
The IMP logo is a registered trademark of IMP, Inc.
All other company and product names are trademarks of their respective owners.
© 2001 IMP, Inc.
Printed in USA
Publication #: 1023
Revision:
A
Issue Date:
10/26/01
Type:
Preliminary
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