G690L308T73U [GMT]
Power Management Circuit, Fixed, 1 Channel, +3.08VV, PDSO3, LEAD FREE, SOT-23, 3 PIN;
| 型号： | G690L308T73U |
| 厂家： | 
GLOBAL MIXED-MODE TECHNOLOGY INC |
| 描述： | Power Management Circuit, Fixed, 1 Channel, +3.08VV, PDSO3, LEAD FREE, SOT-23, 3 PIN 光电二极管 |
| 文件： | 总9页 (文件大小：189K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Global Mixed-mode Technology Inc.
G690/G691
Microprocessor Reset IC
Features
General Description
Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
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- pow-
ered circuits.
Fully Specified Over Temperature
Available in Three Output Configurations
Push-Pull RESET Output (G690L)
Push-Pull RESET Output (G690H)
Open-Drain RESET Output (G691L)
140ms min Power-On Reset Pulse Width
10µA Supply Current
Guaranteed Reset Valid to VCC = +1V
Power Supply Transient Immunity
No External Components
These circuits perform a single function: they assert a
reset signal whenever the VCC supply voltage declines
below a preset threshold, keeping it asserted for at
least 140ms after VCC has risen above the reset
threshold. Reset thresholds suitable for operation with
a variety of supply voltages are available.
3-Pin SOT-23 Packages
The G691L has an open-drain output stage, while the
G690 have push-pull outputs. The G691L’s open-drain
Applications
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC. The G690L
Computers
Controllers
have an active-low RESET output, while the G690H
has an active-high RESET output. The reset com-
parator is designed to ignore fast transients on VCC,
and the outputs are guaranteed to be in the correct
logic state for VCC down to 1V.
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable / Battery-Powered Equipment
Automotive
Low supply current makes the G690/G691 ideal for
use in portable equipment. The G690/G691 are avail-
able in 3-pin SOT-23 packages.
Pin Configuration
Typical Application Circuit
VCC
3
VCC
VCC
*
RPULL-UP
µP
G690/G691
RESET
INPUT
RESET
(RESET)
GND
GND
2
1
SOT-23
*G691 ONLY
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.0
Aug 07, 2006
1
Global Mixed-mode Technology Inc.
G690/G691
Ordering Information
ORDER
NUMBER
ORDER NUMBER
(Pb free)
TEMP.
RANGE
OUTPUT TYPE
PACKAGE
G690LxxxT7xU
G690HxxxT7xU
G691LxxxT7xU
G690LxxxT7xUf
G690HxxxT7xUf
G691LxxxT7xUf
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
Push-Pull Active Low
Push-Pull Active High
Open-Drain
SOT-23
SOT-23
SOT-23
Order Number Identification
G69XX XXX T7
X
X
( f )
Pb free
Packing Type
Pin Option
Package Type
Threshold Voltage Option
Part Number
Part Number
G690L : Push-Pull Active Low Output
Threshold Voltage Option
* xxx specifies the threshold voltage.
G690H : Push-Pull Active High Output
G691L : Open-Drain Output
e.g. 263 denotes the 2.63V threshold voltage.
Package Type
Pin Option
T7 : SOT-23
1
2
3
VCC
1 :RESET
2 :RESET
3 : GND
4 : GND
5 : VCC
GND
VCC
GND
VCC
RESET
VCC
Packing Type
RESET
RESET
GND
U: Tape & Reel
GND
6 : VCC
RESET
*RESET for G690H
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.0
Aug 07, 2006
2
Global Mixed-mode Technology Inc.
G690/G691
Selector Guide
ORDER NUMBER
(Pb free)
TOP MARK
ORDER
NUMBER
RESET THRESHOLD (V)
OUTPUT TYPE
SOT-23
689Fx
689Ex
689Dx
689Cx
689Bx
689Ax
688Lx
688Kx
688Jx
688Ix
G691L463T71U
G691L438T71U
G691L400T71U
G691L308T71U
G691L293T71U
G691L263T71U
G690H463T71U
G690H438T71U
G690H400T71U
G690H308T71U
G690H293T71U
G690H263T71U
G690L463T71U
G690L438T71U
G690L400T71U
G690L308T71U
G690L293T71U
G690L263T71U
Note: T7: SOT-23
G691L463T71Uf
G691L438T71Uf
G691L400T71Uf
G691L308T71Uf
G691L293T71Uf
G691L263T71Uf
G690H463T71Uf
G690H438T71Uf
G690H400T71Uf
G690H308T71Uf
G690H293T71Uf
G690H263T71Uf
G690L463T71Uf
G690L438T71Uf
G690L400T71Uf
G690L308T71Uf
G690L293T71Uf
G690L263T71Uf
4.63
4.38
4.00
3.08
2.93
2.63
4.63
4.38
4.00
3.08
2.93
2.63
4.63
4.38
4.00
3.08
2.93
2.63
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull
688Hx
688Gx
688Fx
688Ex
688Dx
688Cx
688Bx
688Ax
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Not all product options are ready for mass production, please contact factory for availability.
Selector Guide
ORDER NUMBER
(Pb free)
TOP MARK
ORDER
NUMBER
RESET THRESHOLD
(V)
OUTPUT TYPE
SOT-23
687Fx
687Ex
687Dx
687Cx
687Bx
687Ax
686Lx
686Kx
686Jx
686Ix
G691L463T72U
G691L438T72U
G691L400T72U
G691L308T72U
G691L293T72U
G691L263T72U
G690H463T72U
G690H438T72U
G690H400T72U
G690H308T72U
G690H293T72U
G690H263T72U
G690L463T72U
G690L438T72U
G690L400T72U
G690L308T72U
G690L293T72U
G690L263T72U
Note: T7: SOT-23
G691L463T72Uf
G691L438T72Uf
G691L400T72Uf
G691L308T72Uf
G691L293T72Uf
G691L263T72Uf
G690H463T72Uf
G690H438T72Uf
G690H400T72Uf
G690H308T72Uf
G690H293T72Uf
G690H263T72Uf
G690L463T72Uf
G690L438T72Uf
G690L400T72Uf
G690L308T72Uf
G690L293T72Uf
G690L263T72Uf
4.63
4.38
4.00
3.08
2.93
2.63
4.63
4.38
4.00
3.08
2.93
2.63
4.63
4.38
4.00
3.08
2.93
2.63
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull
686Hx
686Gx
686Fx
686Ex
686Dx
686Cx
686Bx
686Ax
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Not all product options are ready for mass production, please contact factory for availability.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.0
Aug 07, 2006
3
Global Mixed-mode Technology Inc.
G690/G691
Selector Guide
ORDER NUMBER
(Pb free)
TOP MARK
ORDER
NUMBER
RESET THRESHOLD
(V)
OUTPUT TYPE
SOT-23
691Fx
691Ex
691Dx
691Cx
691Bx
691Ax
690Lx
690Kx
690Jx
690Ix
G691L463T73U
G691L438T73U
G691L400T73U
G691L308T73U
G691L293T73U
G691L263T73U
G690H463T73U
G690H438T73U
G690H400T73U
G690H308T73U
G690H293T73U
G690H263T73U
G690L463T73U
G690L438T73U
G690L400T73U
G690L308T73U
G690L293T73U
G690L263T73U
Note: T7: SOT-23
G691L463T73Uf
G691L438T73Uf
G691L400T73Uf
G691L308T73Uf
G691L293T73Uf
G691L263T73Uf
G690H463T73Uf
G690H438T73Uf
G690H400T73Uf
G690H308T73Uf
G690H293T73Uf
G690H263T73Uf
G690L463T73Uf
G690L438T73Uf
G690L400T73Uf
G690L308T73Uf
G690L293T73Uf
G690L263T73Uf
4.63
4.38
4.00
3.08
2.93
2.63
4.63
4.38
4.00
3.08
2.93
2.63
4.63
4.38
4.00
3.08
2.93
2.63
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull
690Hx
690Gx
690Fx
690Ex
690Dx
690Cx
690Bx
690Ax
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Not all product options are ready for mass production, please contact factory for availability.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.0
Aug 07, 2006
4
Global Mixed-mode Technology Inc.
G690/G691
Absolute Maximum Ratings
Terminal Voltage (with respect to GND)
CC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.0V
Output Current, RESET, RESET . . . . . . . . . . . . .20mA
Operating Temperature Range . . . . . . .-40°C to 105°C
Storage Temperature Range. . . . . . . . . .-65°C to 150°C
Reflow Temperature (soldering, 10sec) . . . . . . . . 260°C
V
RESET,RESET (push-pull) . . . . . .-0.3V to (VCC + 0.3V)
RESET (open drain) . . . . . . . . .. . . . . . . . . .-0.3V to 6.0V
Input Current, VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . .20mA
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings
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.
Electrical Characteristics
(VCC = full range, TA = 25°C, unless otherwise noted. Typical values are at TA = 25°C, VCC = 5V for
463/438/400 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) (Note 1)
PARAMETER
SYMBOL
CONDITION
MIN TYP MAX UNIT
VCC Range
1.0
---
---
22
10
5.5
30
V
VCC<5.5V, G69_ _463/438/400_
VCC<3.6V, G69_ _308/293/263_
G69_ _463_
Supply Current (SOT-23)
ICC
µA
---
23
4.56 4.63
4.31 4.38
3.93 4.00
4.70
4.45
4.06
G69_ _438_
G69_ _400_
Reset Threshold
VTH
V
G69_ _308_
3.03 3.08 3.12
2.88 2.93 2.97
2.59 2.63 2.67
G69_ _293_
G69_ _263_
---
---
40
7
---
---
ppm/°C
µs
Reset Threshold Tempco
VCC to Reset Delay (Note 2)
VCC = VTH to (VTH - 100mV)
VCC = VTH max,
G69_ _ 463/438/400
VCC = VTH max,
280
150
---
---
640
550
ms
Reset Active Timeout Period
G69_ _308/293/263
RESET Output Current Low (push-pull active
low, and open-drain active-low, G690L and
G691L)
V
CC = 2.5V, V RESET = 0.5V
IOL
8
---
---
mA
VCC = 5V, V RESET = 4.5V,
G690L463/438/400
4.5
3
---
---
---
---
---
---
---
---
---
---
---
---
---
---
RESET Output Current High (push-pull active
low, G690L)
VCC = 3.3V, V RESET = 2.8V,
G690L308/293
mA
mA
IOH
V
CC = 3V, V RESET = 2.5V,
2
G690L263
VCC = 5V, VRESET = 0.5V,
G690H463/438/400
VCC = 3.3V, VRESET = 0.5V,
G690H308/293
16
12
10
2
RESET Output Current Low (push-pull active
high, G690H)
IOL
V
CC = 3V, VRESET = 0.5V,
G690H263
RESET Output Current High (push-pull active
high, G690H)
IOH
VCC = 2.5V, VRESET = 2V
mA
RESET Open-Drain Output Leakage Current
(G691L)
---
---
1
µA
VCC > VTH, RESET deasserted
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.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.0
Aug 07, 2006
5
Global Mixed-mode Technology Inc.
G690/G691
Typical Operating Characteristics
(VCC = full range, TA = 25°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V for
463/438/400 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.)
Temperature (oC)
Temperature (oC)
Temperature (oC)
Temperature (oC)
Recommended Minimum Footprint
SOT-23
Temperature (oC)
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.0
Aug 07, 2006
6
Global Mixed-mode Technology Inc.
G690/G691
Pin Description
PIN
NAME
FUNCTION
1
GND
Ground
RESET Output remains low while VCC is below the reset threshold, and for at least 140ms after
VCC rises above the reset threshold.
(G691L/G690L)
2
3
RESET
(G690H)
VCC
RESET Output remains high while VCC is below the reset threshold, and for at least 140ms after
VCC rises above the reset threshold.
Supply Voltage (+5V, +3.3V, +3.0V)
Detailed Description
Applications Information
A microprocessor’s (µP’s) reset input starts the µP in a
known state. The G691L/G690L/G690H assert reset to
prevent code-execution errors during power-up,
power-down, or brownout conditions. They assert a
reset signal whenever the VCC supply voltage declines
below a preset threshold, keeping it asserted for at
least 140ms after VCC has risen above the reset
threshold. The G691L uses an open-drain output, and
the G690L/G690H have a push-pull output stage.
Negative-Going VCC Transients
In addition to issuing a reset to the µP during power-up,
power-down, and brownout conditions, the G691L/
G690H/G690L are relatively immune to short- duration
negative-going VCC transients (glitches).
Figure 1 shows typical transient duration vs. reset
comparator overdrive, for which the G691L/G690H/
G690L do not generate a reset pulse. The graph was
generated using a negative-going pulse applied to VCC,
starting 0.5V above the actual reset threshold and
ending below it by the magnitude indicated (reset
comparator overdrive). The graph indicates the maxi-
mum pulse width a negative-going VCC transient can
have without causing a reset pulse. As the magnitude
of the transient increases (goes farther below the reset
threshold), the maximum allowable pulse width de-
creases. Typically, for the G69_ _463 and G69_ _438,
a VCC transient that goes 100mV below the reset
threshold and lasts 7µs or less will not cause a reset
pulse. A 0.1µF bypass capacitor mounted as close as
possible to the VCC pin provides additional transient
immunity.
Connect a pull-up resistor on the G691L’s RESET out-
put to any supply between 0 and 5.5V.
600
500
400
300
200
G69_ _ 463/438/400
100
Ensuring a Valid Reset Output Down to VCC = 0
When VCC falls below 1V, the G690 RESET output
no longer sinks current—it becomes an open circuit.
Therefore, high-impedance CMOS logic inputs con-
G69_ _ 308/293/263
0
1
10
100
1000
Reset Comparator Overdrive, VTH- VCC (mV)
nected to RESET can drift to undetermined voltages.
This presents no problem in most applications since
most µP and other circuitry is inoperative with VCC
Figure 1. Maximum Transient Duration Without
Causing a Reset Pulse vs. Reset Com-
parator Overdrive
below 1V. However, in applications where RESET
must be valid down to 0V, adding a pull-down resistor
to RESET causes any stray leakage currents to flow
VCC
to ground, holding RESET low (Figure 2). R1’s value
is not critical; 100kΩ is large enough not to load
RESET and small enough to pull RESET to ground.
G690
RESET
A 100kΩ pull-up resistor to VCC is also recommended
for the G691L if RESET is required to remain valid
for VCC < 1V.
R1
100k
GND
Figure 2. RESET Valid to VCC = Ground Circuit
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.0
Aug 07, 2006
7
Global Mixed-mode Technology Inc.
G690/G691
Interfacing to µPs with Bidirectional Reset Pins
VCC
Since the RESET output on the G691L is open drain,
this device interfaces easily with µPs that have bidirec-
tional reset pins, such as the Motorola 68HC11. Con-
VCC
VCC
RPULL-UP
necting the µP supervisor’s RESET output directly to
µP
G691
the microcontroller’s (µC’s) RESET pin with a single
pull-up resistor allows either device to assert reset
(Figure 3).
RESET MOTOROLA
RESET
INPUT
68HCXX
GND
GND
G691L Open-Drain RESET Output Allows Use with
Multiple Supplies
Generally, the pull-up connected to the G691L will
connect to the supply voltage that is being monitored
at the IC’s VCC pin. However, some systems may use
the open-drain output to level-shift from the monitored
supply to reset circuitry powered by some other supply
(Figure 4). Note that as the G691L’s VCC decreases
below 1V, so does the IC’s ability to sink current at
Figure 3. Interfacing to µPs with Bidirectional Re-
set I/O
+5.0V
RESET . Also, with any pull-up, RESET will be pulled
high as VCC decays toward 0. The voltage where this
occurs depends on the pull-up resistor value and the
voltage to which it is connected.
+3.3V
VCC
VCC
RPULL-UP
5V SYSTEM
G691
Benefits of Highly Accurate Reset Threshold
Most µP supervisor ICs have reset threshold voltages
between 5% and 10% below the value of nominal
supply voltages. This ensures a reset will not occur
within 5% of the nominal supply, but will occur when
the supply is 10% below nominal.
RESET
INPUT
RESET
GND
GND
When using ICs rated at only the nominal supply ±5%,
this leaves a zone of uncertainty where the supply is
between 5% and 10% low, and where the reset may or
may not be asserted.
Figure 4. G691L Open-Drain RESET Output Al-
lows Use with Multiple Supplies
The G69_ _463/G69_ _308 use highly accurate circuitry
to ensure that reset is asserted close to the 5% limit,
and long before the supply has declined to 10% below
nominal.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.0
Aug 07, 2006
8
Global Mixed-mode Technology Inc.
G690/G691
Package Information
C
D
L
E
H
e
θ1
A
A2
A1
b
SOT-23 (T7) Package
Note:
1.Package body sizes exclude mold flash protrusions or gate burrs
2.Tolerance ±0.1000 mm (4mil) unless otherwise specified
3.Coplanarity: 0.1000mm
4.Dimension L is measured in gage plane
DIMENSIONS IN MILLIMETER
SYMBOL
MIN
1.00
0.00
0.70
0.35
0.10
2.70
1.40
-----
NOM
1.10
MAX
1.30
0.10
0.90
0.50
0.25
3.10
1.80
-----
A
A1
A2
b
-----
0.80
0.40
C
0.15
D
2.90
E
1.60
e
1.90(TYP)
2.80
H
2.60
0.37
1°
3.00
-----
L
------
θ1
5°
9°
Taping Specification
PACKAGE
Q’TY/REEL
SOT-23
3,000 ea
Feed Direction
SOT-23 Package Orientation
GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.0
Aug 07, 2006
9
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