RT9816H-13CY [RICHTEK]
Micro-Power Voltage Detectors with Manual Reset; 微功耗电压检测器，带有手动复位
| 型号： | RT9816H-13CY |
| 厂家： | 
RICHTEK TECHNOLOGY CORPORATION |
| 描述： | Micro-Power Voltage Detectors with Manual Reset |
| 文件： | 总10页 (文件大小：117K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RT9816
Micro-Power Voltage Detectors with Manual Reset
General Description
Features
z Internally Fixed Threshold 1.0V to 5V in 0.1V Step
The RT9816 is a micro-power voltage detector with
deglitched manual reset input supervising the power
supply voltage level for microprocessors (μP) or digital
systems. It provides internally fixed threshold levels with
0.1V per step ranging from 1.0V to 5V, which covers most
digital applications. It features low supply current of 3μA.
The RT9816 performs supervisory function by sending
out a reset signal whenever the VDD voltage falls below a
preset threshold level. This reset signal will last the whole
period before VDD recovering. Once VDD recovered
upcrossing the threshold level, the reset signal will be
released after a certain delay time. To pull reset signal
low manually, just pull the manual reset input (MR) below
the specified VIL level. RT9816 is provided in SC-82
package.
z High Accuracy 1.5%
z Low Supply Current 3μA
z No External Components Required
z Quick Reset within 20μs
z Built-in Recovery Delay Include 0ms, 55ms, 220ms,
450ms Options
z 800ns Glitch Immunity of Manual Reset Input
z Low Functional Supply Voltage 0.9V
z N-Channel Open-Drain Output,
z Small SC-82 Package
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Computers
z Controllers
Ordering Information
RT9816
z Intelligent Instruments
z Critical μP and μC Power Monitoring
z Portable/Battery-Powered Equipment
-
Package Type
Y : SC-82
Operating Temperature Range
C : Commercial Standard
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
Threshold Voltage
12 : 1.2V
13 : 1.3V
:
49 : 4.9V
50 : 5.0V
Pin Configurations
(TOP VIEW)
Reset Active Timeout Period
A = 0ms (RESET)
B = 55ms (RESET)
C = 220ms (RESET)
D = 450ms (RESET)
E = 0ms (RESET)
F = 55ms (RESET)
G = 220ms (RESET)
H = 450ms (RESET)
VDD
MR
4
1
3
2
GND
RESET/
RESET
SC-82
Note :
Note : There is no pin1 indicator on top mark for SC-82 type,
and pin 1 will be lower left pin when reading top mark from
left to right. Pin2 of SC-82 is wider than other pins.
RichTek Pb-free and Green products are :
`RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
`Suitable for use in SnPb or Pb-free soldering processes.
`100%matte tin (Sn) plating.
DS9816-03 March 2007
www.richtek.com
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RT9816
Typical Application Circuit
100k
Pull Up
RT9816
VDD
up
GND
VDD
RESET/
RESET
RESET/
RESET
MR
Functional Pin Description
Pin Name
Pin Function
GND
Ground Pin
RESET
RESET
MR
Active Low Open-Drain Reset Output
Active High Open-Drain Reset Output
Manual Reset
VDD
Power Pin
Function Block Diagram
VDD
MR
RESET/
RESET
Timer
CMP
N MOS
VSET
GND
Threshold
Voltage Setting
POR
Power On Reset
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DS9816-03 March 2007
RT9816
Absolute Maximum Ratings (Note 1)
z Terminal Voltage (with Respect to GND)
VDD ------------------------------------------------------------------------------------------------------------------------ −0.3V to 6.0V
z All Other Inputs -------------------------------------------------------------------------------------------------------- −0.3V to V +0.3V
DD
z Input Current, IVDD ----------------------------------------------------------------------------------------------------- 20mA
z Power Dissipation, PD @ TA = 25°C
SC-82 -------------------------------------------------------------------------------------------------------------------- 0.25W
z Package Thermal Resistance (Note 4)
SC-82, θJA --------------------------------------------------------------------------------------------------------------- 400°C
z Lead Temperature (Soldering, 10sec.)---------------------------------------------------------------------------- 260°C
z Storage Temperature Range ---------------------------------------------------------------------------------------- −65°C to 125°C
z ESD Susceptibility (Note 2)
HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV
MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 3)
z Junction Temperature Range---------------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range---------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VDD = 3V, unless otherwise specified)
Parameter
Operating V (V
Symbol
Test Conditions
Min
0.9
--
Typ
Max
Units
V
) Range
OUT
V
I
--
6
8
DD
DD
Supply Current
Reset Threshold
VTH = 3V , V = 4.5V TA = 27°C
3
μA
V
DD
DD
V
V
V
TA = 27°C
--
1.2 to 5.0
--
TH
IL
TA = 27°C, VTH > 1.2V
TA = 27°C, VTH > 1.2V
--
--
--
0.25V
DD
MR Input Threshold
MR Glitch Rejection
V
0.7V
--
--
IH
DD
--
−1.5
--
800
--
ns
%
Threshold Voltage Accuracy
Drop to Reset Delay
ΔV
T = 27°C
+1.5
--
TH
A
V
t
Drop = V -125mV
20
μs
ms
ms
ms
ms
V
DD
RD
TH
RT9816A/E
--
0
--
RT9816B/F
RT9816C/G
RT9816D/H
35
143
292
--
55
75
297
608
0.4
--
Reset Active
Time Out Period
t
V
≥ 1.02×V
DD TH
RP
220
450
--
RESET Output Voltage Low
Hysteresis Width
V
3 = V
< V
I
>3.5mA
OL
DD
TH SINK
V
HYS
--
0.01VTH
V
DS9816-03 March 2007
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RT9816
Note 1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for
stress ratings. 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 remain possibility to affect device reliability.
Note 2. Devices are ESD sensitive. Handling precaution recommended.
Note 3. The device is not guaranteed to function outside its operating conditions.
Note 4. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of
JEDEC 51-3 thermal measurement standard.
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DS9816-03 March 2007
RT9816
Typical Operating Characteristics
Nch Driver Output Current vs. VDS
Nch Driver Output Current vs. VDS
2.4
60
50
40
30
20
10
0
RT9816C-30
RT9816A-12
VDD = 2.8V
VDD = 1.1V
2
VDD = 2.5V
1.6
1.2
VDD = 2.0V
VDD = 1.0V
0.8
VDD = 1.5V
0.4
0
0
0.3
0.6
0.9
1.2
1.5
0
0.5
1
1.5
2
2.5
3
3.5
VDS (V)
VDS (V)
Output Voltage vs. Input Voltage
Nch Driver Output Current vs. VDS
7
6
5
4
3
2
1
0
120
100
80
60
40
20
0
RT9816
RT9816A-45
VDD = 4.4V
= 4.0V
= 3.5V
= 3.0V
= 2.5V
= 2.0V
4.5V
1.2V
= 1.5V
0
1
2
3
4
5
0
1
2
3
4
5
6
VDS (V)
Input Volgate (V)
Supply Current vs. Input Voltage
Supply Current vs. Input Voltage
6
5
4
3
2
1
0
4
3.5
3
RT9816A-12
RT9816C-30
80°C
25°C
80°C
2.5
2
25°C
-30°C
1.5
1
-30°C
0.5
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage (V)
Input Voltage (V)
DS9816-03 March 2007
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RT9816
Supply Current vs. Input Voltage
Power-Down Reset Delay vs. Temperature
4
3.5
3
14
RT9816A-45
RT9816A-12
12
10
8
80°C
25°C
2.5
2
VDROP = 200mV
-30°C
VDROP = 150mV
VDROP = 250mV
6
1.5
1
4
2
0.5
0
0
0
1
2
3
4
5
6
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature
(°C)
Power-Down Reset Delay vs. Temperature
Power-Down Reset Delay vs. Temperature
45
40
35
30
25
20
15
10
5
45
RT9816C-30
RT9816A-45
40
35
30
25
20
15
10
5
VDROP = 200mV
VDROP = 150mV
VDROP = 250mV
VDROP = 200mV
VDROP = 150mV
VDROP = 250mV
0
0
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
(°C)
Temperature
Temperature (°C)
Reset Threshold Deviation vs. Temperature
Nch Driver Sink Current vs. Input Voltage
6
40
RT9816
RT9816C-30, VDS = 0.5V
5.0V
35
30
25
20
15
10
5
-30°C
5
4.5V
25°C
4
3
2
1
4.2V
80°C
2.2V
1.2V
0
-50
-25
0
25
50
75
100
125
0
0.5
1
1.5
2
2.5
3
3.5
Input Voltage(V)
(°C)
Temperature
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DS9816-03 March 2007
RT9816
Nch Driver Sink Current vs. Input Voltage
Power-Up Reset Time-Out vs. Temperature
50
40
30
20
10
0
500
RT9816A-45, VDS = 0.5V
RT9816C
-30°C
400
300
200
100
0
25°C
VTH = 2.9V
80°C
VTH = 3.0V
0
1
2
3
4
5
-50
-25
0
25
50
75
100
125
Input Voltage(V)
Temperature
(°C)
Power-Up Reset Time-Out vs. Temperature
Output Delay Time vs. Load Capacitance
100
1000
100
10
RT9816A
80
60
40
20
0
VTH = 5.0V
VTH = 4.5V
VTH = 1.2V
1
0.1
VTH = 4.5V
0.0010
0.01
0.0001
0.0100
0.1000
1.0000
-50
-25
0
25
50
75
100
125
Load Capacitance (uF)
Temperature
(°C)
Nch Driver Output Current vs. Input Voltage
Nch Driver Output Current vs. VDS
60
160
140
120
100
80
RT9816G-31
RT9816G-31
VDS = 0.5V
-30°C
25°C
50
40
30
20
10
0
VDD = 6.0V
= 5.5V
80°C
= 5.0V
= 4.5V
= 4.0V
= 3.5V
60
40
20
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage (V)
VDS (V)
DS9816-03 March 2007
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RT9816
Power Down Reset Time-Out vs. Temperature
Output Voltage vs. Input Voltage
500
400
300
200
100
0
7
6
5
4
3
2
1
0
RT9816G-31
RT9816G-31
-50
-25
0
25
50
75
100
125
0
1
2
3
4
5
6
Temperature
(°C)
Input Voltage (V)
Power-Down Reset Time-Out vs. Temperature
30
RT9816G-31
25
20
VDROP = 200mV
VDROP = 150mV
15
10
VDROP = 250mV
5
0
-50
-25
0
25
50
75
100
125
Temperature
(°C)
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DS9816-03 March 2007
RT9816
Application Information
Multiple Supplies
Mainly, the pull-up connected to the RT9816 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.
Benefits of Highly Accurate Reset Threshold
Most μP supervisor ICs have reset threshold voltages between 1% and 1.5% below the value of nominal supply voltages.
This ensures a reset will not occur within 1% of the nominal supply, but will occur when the supply is 1.5% below
nominal.
DS9816-03 March 2007
www.richtek.com
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RT9816
Outline Dimension
D
e
H
L
B
C
A
b1
b
A1
e
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
B
0.800
0.000
1.150
0.150
0.350
1.800
1.800
1.100
0.100
1.350
0.400
0.500
2.450
2.200
0.031
0.000
0.045
0.006
0.014
0.071
0.071
0.043
0.004
0.053
0.016
0.020
0.096
0.087
b
b1
C
D
e
1.300
0.051
H
L
0.080
0.200
0.260
0.460
0.003
0.008
0.010
0.018
SC-82 Surface Mount Package
Richtek Technology Corporation
Headquarter
Richtek Technology Corporation
Taipei Office (Marketing)
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
8F, No. 137, Lane 235, Paochiao Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: (8863)5526789 Fax: (8863)5526611
Tel: (8862)89191466 Fax: (8862)89191465
Email: marketing@richtek.com
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10
DS9816-03 March 2007
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