Global Mixed-mode Technology G690, G691 Service Manual
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Global Mixed-mode Technology Inc.
Microprocessor Reset IC
Features
Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
Fully Specified Over Temperature
Available in Three Output Configurations
Push-Pull
Push-Pull RESET Output (G690H)
Open-Drain
140ms min Power-On Reset Pulse Width
10µA Supply Current
Guaranteed Reset Valid to V
Power Supply Transient Immunity
No External Components
3-Pin SOT89, SOT23 and SC70 Packages
Applications
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable / Battery-Powered Equipment
Automotive
RESET Output (G690L)
RESET Output (G691L)
= +1V
CC
G690/G691
General Description
The G690/G691 are microprocessor (µP) supervisory
circuits used to monitor the power supplies in µP and
digital systems. They provide excellent circuit reliability
and low cost by eliminating external components and
adjustments when used with +5V, +3.3V, +3.0V- powered circuits.
These circuits perform a single function: they assert a
reset signal whenever the V
supply voltage declines
CC
below a preset threshold, keeping it asserted for at
least 140ms after V
has risen above the reset
CC
threshold. Reset thresholds suitable for operation with
a variety of supply voltages are available.
The G691L has an open-drain output stage, while the
G690 have push-pull outputs. The G691L’s open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than V
have an active-low
RESET output, while the G690H
. The G690L
CC
has an active-high RESET output. The reset comparator is designed to ignore fast transients on V
CC
and the outputs are guaranteed to be in the correct
logic state for V
down to 1V.
CC
Low supply current makes the G690/G691 ideal for
use in portable equipment. The G690/G691 are available in 3-pin SOT89 or SOT23 or SC70 packages.
,
Pin Configuration Typical Application
V
V
CC
CC
3
12
12
SOT 89
SOT 89
3
3
3
1
1
SOT23/SC70
SOT23/SC70
2
2
V
V
CC
CC
G690/G691
G690/G691
RESET
RESET
(RESET)
(RESET)
GND
GND
*G691 ONLY
*G691 ONLY
R
R
PULL-UP
PULL-UP
*
*
RESET
RESET
INPUT
INPUT
V
V
CC
CC
µP
µP
GND
GND
Ver: 1.3
Oct 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
1
Global Mixed-mode Technology Inc.
G690/G691
Ordering Information
PART TEMP. RANGE OUTPUT TYPE
G690LxxxTxx -40°C ~ +105°C Push-Pull Active Low
G690HxxxTxx -40°C ~ +105°C Push-Pull Active High
G691LxxxTxx -40°C ~ +105°C Open-Drain
Order Number Identification
G69XX XXX TX X
Pin Option
Package Type
Threshold Voltage Option
Part Number
PART NUMBER
G690L : Push-Pull Active Low Output * xxx specifies the threshold voltage.
G690H : Push-Pull Active High Output e.g. 263 denotes the 2.63V threshold voltage.
G691L : Open-Drain Output
THRESHOLD VOLTAGE OPTION
PACKAGE TYPE PIN OPTION
T2 : SOT 89
T7 : SOT 23
T9 : SC 70
3 : GND
4 : GND V
5 : V
6 : V
1 2 3
RESET
1 :
2 :
*RESET for G690H
RESET
GND
CC
CC
GND
V
GND
CC
RESET
CC
RESET
V
V
GND
CC
CC
RESET
RESET
Ver: 1.3
Oct 31, 2002
2
TEL: 886-3-5788833
http://www.gmt.com.tw
T
T
V
V
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
Global Mixed-mode Technology Inc.
G690/G691
Absolute Maximum Ratings
Terminal Voltage (with respect to GND)
V
.……………………………..…….…….-0.3V to +6.0V
CC
RESET,
RESET (push-pull)....…....-0.3V to (VCC + 0.3V)
RESET (open drain)...….......................-0.3V to +6.0V
Input Current, V
Output Current, RESET,
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress rat-
ings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of
the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
............................….................20mA
CC
RESET ........................20mA
Continuous Power Dissipation (T
3-Pin SOT89……………………………………….500mW
3-Pin SOT23 (derate 4mW/°C above +70°C)….320mW
3-Pin SC70 (derate 2.17mW/°C above +70°C)..174mW
Operating Temperature Range …........-40°C to +105°C
Storage Temperature Range..….….….-65°C to +150°C
Lead Temperature (soldering, 10s) ..…....…......+300°C
= +70°C)
A
Electrical Characteristics
(VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V
for 463/438/400 versions, V
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS
VCC Range
Supply Current (SOT23) ICC TA = -40°C +105°C
Reset Threshold VTH
= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) (Note 1)
CC
= 0°C +70°C 1.0 5.5
A
= -40°C +105°C 1.2 5.5
A
<5.5V, G69_ _463/438/400_ 22 30
CC
<3.6V, G69_ _308/293/263_ 10 23
CC
= +25°C 4.56 4.63 4.70
A
G69_ _463_
G69_ _438_
G69_ _400_
G69_ _308_
G69_ _293_
G69_ _263_
= -40°C to +85°C 4.50 4.75
A
= +85°C to +105°C 4.40 4.86
A
= +25°C 4.31 4.38 4.45
A
= -40°C to +85°C 4.25 4.50
A
= +85°C to +105°C 4.16 4.56
A
= +25°C 3.93 4.00 4.06
A
= -40°C to +85°C 3.89 4.10
A
= +85°C to +105°C 3.80 4.20
A
= +25°C 3.04 3.08 3.11
A
= -40°C to +85°C 3.00 3.15
A
= +85°C to +105°C 2.92 3.23
A
= +25°C 2.89 2.93 2.96
A
= -40°C to +85°C 2.85 3.00
A
= +85°C to +105°C 2.78 3.08
A
= +25°C 2.59 2.63 2.66
A
= -40°C to +85°C 2.55 2.70
A
= +85°C to +105°C 2.50 2.76
A
V
µA
V
Ver: 1.3
Oct 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
3
Global Mixed-mode Technology Inc.
G690/G691
Electrical Characteristics
(Continued)
(VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V
for 463/438/400 versions, V
= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) (Note 1)
CC
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS
Reset Threshold Tempco 40 ppm/°C
VCC to Reset Delay (Note 2) VCC = VTH to (VTH – 100mV) 7 µs
Reset Active Timeout Period
RESET
and open-drain active-low, G690L and G691L)
RESET
low, G690L)
RESET Output Current Low (push-pull active
high, G690H)
RESET Output Current High (push-pull active
high, G690H)
RESET
(G691L)
Output Current Low (push-pull active low,
Output Current High (push-pull active
Open-Drain Output Leakage Current
I
I
I
I
VCC = VTH max,
G69_ _ 463/438/400
= VTH max,
V
CC
G69_ _308/293/263
= 2.5V, V
V
OL
OH
OL
OH
CC
VCC = 5V, V
G690L463/438/400
VCC = 3.3V, V
G690L308/293
= 3V, V
V
CC
G690L263
VCC = 5V, V
G690H463/438/400
VCC = 3.3V, V
G690H308/293
V
= 3V, V
CC
G690H263
VCC = 2.5V, V
> VTH,
V
CC
280 640
140 550
= 0.5V
RESET
= 4.5V,
RESET
= 2.8V,
RESET
= 2.5V,
RESET
= 0.5V,
RESET
= 0.5V,
RESET
= 0.5V,
RESET
= 2V 2 mA
RESET
RESET
deasserted
8 mA
4.5
3
2
16
12
10
1 µA
ms
mA
mA
Note 1: Production testing done at TA = +25°C; limits over temperature guaranteed by design.
Note 2:
RESET output is for G690L/G691L; While RESET output is for G690H.
Selector Guide
PART/SUFFIX RESET THRESHOLD (V) OUTPUT TYPE
G691L463Tx1 4.63 Open-Drain 689Fx 689Fx 689Fx
G691L438Tx1 4.38 Open-Drain 689Ex 689Ex 689Ex
G691L400Tx1 4.00 Open-Drain 689Dx 689Dx 689Dx
G691L308Tx1 3.08 Open-Drain 689Cx 689Cx 689Cx
G691L293Tx1 2.93 Open-Drain 689Bx 689Bx 689Bx
G691L263Tx1 2.63 Open-Drain 689Ax 689Ax 689Ax
G690H463Tx1 4.63 Push-Pull RESET 688Lx 688Lx 688Lx
G690H438Tx1 4.38 Push-Pull RESET 688Kx 688Kx 688Kx
G690H400Tx1 4.00 Push-Pull RESET 688Jx 688Jx 688Jx
G690H308Tx1 3.08 Push-Pull RESET 688Ix 688Ix 688Ix
G690H293Tx1 2.93 Push-Pull RESET 688Hx 688Hx 688Hx
G690H263Tx1 2.63 Push-Pull RESET 688Gx 688Gx 688Gx
G690L463Tx1 4.63 Push-Pull 688Fx 688Fx 688Fx
G690L438Tx1 4.38 Push-Pull 688Ex 688Ex 688Ex
G690L400Tx1 4.00 Push-Pull 688Dx 688Dx 688Dx
G690L308Tx1 3.08 Push-Pull 688Cx 688Cx 688Cx
G690L293Tx1 2.93 Push-Pull 688Bx 688Bx 688Bx
G690L263Tx1 2.63 Push-Pull 688Ax 688Ax 688Ax
SOT 89 SOT 23 SC70
Note: T2: SOT89; T7: SOT23; T9: SC70
TOP MARK
Ver: 1.3
Oct 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
4
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