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AME, Inc.
AME8550
Voltage Detector
n General Description
The AME8550 series are highly precise, low power consumption voltage detectors, manufactured using CMOS and fuse trimming technologies. Detect voltage is extremely accurate with minimal temperature drift. Both CMOS and N channel open drain output configurations are available.
n Functional Block Diagram
(1) CMOS Output without delay
VDD
VOUT
Vref
VSS
BG
n Features
l Highly accurate: + 2% l Low power consumption: TYP 0.8A (VDD=1.5V) l Detect voltage range: 1.6V to 6.0V in 0.1V increments l Operating voltage range: 1.2V to 6.5V l Detect voltage temperature characteristics: TYP 100ppm/oC l Output configuration: N-channel open drain or CMOS l Ultra small package : SOT-23 (150mW) SOT-25 (150mW) SOT-89 (500mW) SC-70 (100mW) l Add an external capacitor to perform an P reset. (2) Nch Open Drain Output without delay
VDD
VOUT VSS
Vref
BG
(3) CMOS Output with delay
VDD VOUT VDD VSS
I
VTH=VREF
Vref BG
CD
n Applications
l l l l l Microprocessor reset circuitry Memory battery back-up circuits Power-on reset circuits Power failure detection System battery life and charge voltage monitors
(4) Nch Open Drain Output with delay
VOUT VDD VSS
VDD
I
VTH=VREF
CD
Vref BG
1
AME, Inc.
AME8550
Voltage Detector
n Pin Configuration
l Without Delay Time
SOT-23 Top View
3
SOT-89 Top View AME8550AEETXXXX 1. VOUT 2. Vss 3. VDD AME8550AEFTXXXX 1. VOUT 2. VDD 3. Vss
AME8550
AME8550
1
2
1
2
3
SOT-25 Top View
5 4
SC70-3 Top View AME8550CEEVXXXX 1. VOUT 2. VDD 3. Vss 4. NC 5. NC
3
AME8550
AME8550
AME8550AEITXXXX 1. VSS 2. VOUT 3. VDD
1
2
3
1
2
l With Delay Time
SOT-25 Top View
5 4
SOT-25 Top View AME8550AEEVXXXX 1. VOUT 2. VDD 3. Vss 4. CD 5. NC
5 4
AME8550
AME8550
AME8550BEEVXXXX 1. VOUT 2. VDD 3. Vss 4. NC 5. CD
1
2
3
1
2
3
n Pin Description
Pin Name
VDD VSS VOUT NC CD
2
Pin Description
Supply Voltage Input Ground Output No Connection Connect an external capacitor when delay function is needed
AME, Inc.
AME8550
Voltage Detector
n Ordering Information
l Without Delay Time
AME8550 x x x x x xxx x
Special Feature Detect Voltage Output Options Number of Pins Package Type Operating Temperature Pin Out Configuration
Operating Pin Temperature Configuration Range A
(SOT-23)
Package Type
Number of Pins
Output Options
Detect Voltage
Special Feature
1. VOUT E: -40OC to 85OC E: SOT-2X T: 3 2. VSS F: SOT-89 V: 5 3. VDD 1. VOUT 2. VDD 3. VSS 1. VSS 2. VOUT 3. VDD 1. 2. 3. 4. 5. VOUT VDD VSS NC NC
A
(SOT-89)
A
(SC70-3)
C
(SOT-25)
A: CMOS output without delay 190: V=1.9V L: Low profile B: Open-Drain output without 200: V=2.0V Y: Lead free & Low profile delay 220: V=2.2V 230: V=2.3V Z: Lead free 240: V=2.4V 250: V=2.5V 263: V=2.63V 270: V=2.7V 280: V=2.8V 360: V=3.6V 370: V=3.7V 420: V=4.2V 440: V=4.4V 460: V=4.6V
3
AME, Inc.
AME8550
Voltage Detector
n Ordering Information
l With Delay Time
AME8550 x x x x x xxx x
Special Feature Detect Voltage Output Options Number of Pins Package Type Operating Temperature Pin Out Configuration
Operating Pin Temperature Configuration Range
Package Type
Number of Pins
Output Options
Detect Voltage
Special Feature
A
(SOT-25)
1. 2. 3. 4. 5. 1. 2. 3. 4. 5.
VOUT E: -40OC to 85OC E: SOT-2X T: 3 F: SOT-89 V: 5 VDD VSS CD NC VOUT VDD VSS NC CD
C: CMOS output with delay D: Open-Drain output with delay
B
190: 200: 220: 230: 240: 250: 263: 270: 280: 360: 370: 420: 440: 460:
V=1.9V L: Low profile V=2.0V Y: Lead free V=2.2V & Low profile V=2.3V Z: Lead free V=2.4V V=2.5V V=2.63V V=2.7V V=2.8V V=3.6V V=3.7V V=4.2V V=4.4V V=4.6V
4
AME, Inc.
AME8550
Voltage Detector
n Ordering Information (contd.)
Part Number
AME8550AEEVC190 AME8550AEEVC190L AME8550AEEVC190Z AME8550AEEVC190Y AME8550BEEVC190 AME8550BEEVC190L AME8550BEEVC190Z AME8550BEEVC190Y AME8550AEETB210 AME8550AEETB210L AME8550AEETB210Z AME8550AEETB210Y AME8550AEFTB210 AME8550AEFTB210Z AME8550CEEVB210 AME8550CEEVB210L AME8550CEEVB210Z AME8550CEEVB210Y AME8550AEETA220 AME8550AEETA220L AME8550AEETA220Z AME8550AEETA220Y AME8550AEFTA220 AME8550AEFTA220Z AME8550AEITA220 AME8550AEITA220Z
Marking
AXOww AXOww AXOww AXOww AXPww AXPww AXPww AXPww AXQww AXQww AXQww AXQww A8550A B210ww A8550A B210ww AXRww AXRww AXRww AXRww AWHww AWHww AWHww AWHww A8550A A220ww A8550A A220ww AXKw AXKw
Output Voltage
1.9V 1.9V 1.9V 1.9V 1.9V 1.9V 1.9V 1.9V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.1V 2.2V 2.2V 2.2V 2.2V 2.2V 2.2V 2.2V 2.2V
Package
SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-23 SOT-23 SOT-23 SOT-23 SOT-89 SOT-89 SOT-25 SOT-25 SOT-25 SOT-25 SOT-23 SOT-23 SOT-23 SOT-23 SOT-89 SOT-89 SC70-3 SC70-3
Operating Temp. Range
-40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC
5
AME, Inc.
AME8550
Voltage Detector
n Ordering Information (contd.)
Part Number
AME8550AEETB240 AME8550AEETB240L AME8550AEETB240Z AME8550AEETB240Y AME8550AEFTB240 AME8550AEFTB240Z AME8550CEEVB240 AME8550CEEVB240L AME8550CEEVB240Z AME8550CEEVB240Y AME8550AEEVD240 AME8550AEEVD240L AME8550AEEVD240Z AME8550AEEVD240Y AME8550BEEVD240 AME8550BEEVD240L AME8550BEEVD240Z AME8550BEEVD240Y AME8550AEETB250 AME8550AEETB250L AME8550AEETB250Z AME8550AEETB250Y AME8550AEFTB250
Marking
AXVww AXVww AXVww AXVww A8550A B240ww A8550A B240ww AXWww AXWww AXWww AXWww AXXww AXXww AXXww AXXww AXYww AXYww AXYww AXYww AXZww AXZww AXZww AXZww
Output Voltage
2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.4V 2.5V 2.5V 2.5V 2.5V
Package
SOT-23 SOT-23 SOT-23 SOT-23 SOT-89 SOT-89 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-23 SOT-23 SOT-23 SOT-23
Operating Temp. Range
-40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC
A8550A 2.5V SOT-89 -40oC to +85oC B250ww A8550A 2.5V SOT-89 AME8550AEFTB250Z -40oC to +85oC B250ww Note: ww represents the date code / w represents date code ( A thru Z ) : 2 work weeks per character. * A line on top of the first letter represents lead free plating such as AME8550 Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type .
6
AME, Inc.
AME8550
Voltage Detector
n Ordering Information (contd.)
Part Number
AME8550CEEVB250 AME8550CEEVB250L AME8550CEEVB250Z AME8550CEEVB250Y AME8550AEEVD260 AME8550AEEVD260L AME8550AEEVD260Z AME8550AEEVD260Y AME8550BEEVD260 AME8550BEEVD260L AME8550BEEVD260Z AME8550BEEVD260Y AME8550AEETA270 AME8550AEETA270L AME8550AEETA270Z AME8550AEETA270Y AME8550AEFTA270 AME8550AEFTA270Z AME8550AEITA270 AME8550AEITA270Z AME8550AEETB270 AME8550AEETB270L AME8550AEETB270Z AME8550AEETB270Y AME8550AEFTB270 AME8550AEFTB270Z
Marking
AYAww AYAww AYAww AYAww AYVww AYVww AYVww AYVww AYWww AYWww AYWww AYWww AWIww AWIww AWIww AWIww A8550A A270ww A8550A A270ww AXNw AXNw AWVww AWVww AWVww AWVww A8550A B270ww A8550A B270ww
Output Voltage
2.5V 2.5V 2.5V 2.5V 2.6V 2.6V 2.6V 2.6V 2.6V 2.6V 2.6V 2.6V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V
Package
SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-23 SOT-23 SOT-23 SOT-23 SOT-89 SOT-89 SC70-3 SC70-3 SOT-23 SOT-23 SOT-23 SOT-23 SOT-89 SOT-89
Operating Temp. Range
-40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC
7
AME, Inc.
AME8550
Voltage Detector
n Ordering Information (contd.)
Part Number
AME8550CEEVB270 AME8550CEEVB270L AME8550CEEVB270Z AME8550CEEVB270Y AME8550AEEVD270 AME8550AEEVD270L AME8550AEEVD270Z AME8550AEEVD270Y AME8550BEEVD270 AME8550BEEVD270L AME8550BEEVD270Z AME8550BEEVD270Y AME8550AEETB280 AME8550AEETB280L AME8550AEETB280Z AME8550AEETB280Y AME8550AEFTB280 AME8550AEFTB280Z AME8550CEEVB280 AME8550CEEVB280L AME8550CEEVB280Z AME8550CEEVB280Y AME8550AEEVC290 AME8550AEEVC290L AME8550AEEVC290Z AME8550AEEVC290Y
8
Marking
AYSww AYSww AYSww AYSww AYXww AYXww AYXww AYXww AYYww AYYww AYYww AYYww AYBww AYBww AYBww AYBww A8550A B280ww A8550A B280ww AYCww AYCww AYCww AYCww AYDww AYDww AYDww AYDww
Output Voltage
2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.7V 2.8V 2.8V 2.8V 2.8V 2.8V 2.8V 2.8V 2.8V 2.8V 2.8V 2.9V 2.9V 2.9V 2.9V
Package
SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-23 SOT-23 SOT-23 SOT-23 SOT-89 SOT-89 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25
Operating Temp. Range
-40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC
AME, Inc.
AME8550
Voltage Detector
n Ordering Information (contd.)
Part Number
AME8550BEEVC290 AME8550BEEVC290L AME8550BEEVC290Z AME8550BEEVC290Y AME8550AEETA300 AME8550AEETA300L AME8550AEETA300Z AME8550AEETA300Y AME8550AEFTA300 AME8550AEFTA300Z AME8550CEEVA300 AME8550CEEVA300L AME8550CEEVA300Z AME8550CEEVA300Y AME8550AEETB340 AME8550AEETB340L AME8550AEETB340Z AME8550AEETB340Y AME8550AEFTB340 AME8550AEFTB340Z AME8550CEEVB340 AME8550CEEVB340L AME8550CEEVB340Z AME8550CEEVB340Y
Marking
AYEww AYEww AYEww AYEww AYFww AYFww AYFww AYFww A8550A A300ww A8550A A300ww AYGww AYGww AYGww AYGww AYHww AYHww AYHww AYHww A8550A B340ww A8550A B340ww AYIww AYIww AYIww AYIww
Output Voltage
2.9V 2.9V 2.9V 2.9V 3.0V 3.0V 3.0V 3.0V 3.0V 3.0V 3.0V 3.0V 3.0V 3.0V 3.4V 3.4V 3.4V 3.4V 3.4V 3.4V 3.4V 3.4V 3.4V 3.4V
Package
SOT-25 SOT-25 SOT-25 SOT-25 SOT-23 SOT-23 SOT-23 SOT-23 SOT-89 SOT-89 SOT-25 SOT-25 SOT-25 SOT-25 SOT-23 SOT-23 SOT-23 SOT-23 SOT-89 SOT-89 SOT-25 SOT-25 SOT-25 SOT-25
Operating Temp. Range
-40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC
9
AME, Inc.
AME8550
Voltage Detector
n Ordering Information (contd.)
Part Number
AME8550AEEVD360 AME8550AEEVD360L AME8550AEEVD360Z AME8550AEEVD360Y AME8550BEEVD360 AME8550BEEVD360L AME8550BEEVD360Z AME8550BEEVD360Y AME8550AEETB440 AME8550AEETB440L AME8550AEETB440Z AME8550AEETB440Y AME8550AEFTB440 AME8550AEFTB440Z AME8550CEEVB440 AME8550CEEVB440L AME8550CEEVB440Z AME8550CEEVB440Y AME8550AEEVC460 AME8550AEEVC460L AME8550AEEVC460Z AME8550AEEVC460Y AME8550BEEVC460 AME8550BEEVC460L AME8550BEEVC460Z AME8550BEEVC460Y
10
Marking
AYJww AYJww AYJww AYJww AYKww AYKww AYKww AYKww AYLww AYLww AYLww AYLww A8550A B440ww A8550A B440ww AYMww AYMww AYMww AYMww AYNww AYNww AYNww AYNww AYOww AYOww AYOww AYOww
Output Voltage
3.6V 3.6V 3.6V 3.6V 3.6V 3.6V 3.6V 3.6V 4.4V 4.4V 4.4V 4.4V 4.4V 4.4V 4.4V 4.4V 4.4V 4.4V 4.6V 4.6V 4.6V 4.6V 4.6V 4.6V 4.6V 4.6V
Package
SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-23 SOT-23 SOT-23 SOT-23 SOT-89 SOT-89 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25 SOT-25
Operating Temp. Range
-40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC -40oC to +85oC
AME, Inc.
AME8550
Voltage Detector
n Absolute Maximum Ratings
Parameter
Input Voltage Output Current CMOS Output Voltage Nch open drain SOT-23 SOT-25 Power Dissipation SOT-89 SC-70 Operating Ambient Temperature Range Storage Temperature Range Topr TSTG 500 100 -40 to +85
o
Symbol
VDD IOUT
Maximum
7 50 Vss -0.3 to VDD +0.3
Unit
V mA
VOUT Vss -0.3 to 7 150 150
V
mW
C
- 40 to +125
Caution: Stress above the listed absolute rating may cause permanent damage to the device
11
AME, Inc.
AME8550
Voltage Detector
n Electrical Specifications
TA = 25OC, VDF(T)=1.6 to 6.0V + 2%
Parameter Detect Voltage Hysteresis Range Symbol VDF VHY S / VDF 1.5 < V DF < 2.0 2.0 <= V DF < 3.0 Supply Current ISS V DD =VDF +0.5V 3.0 <= V DF < 4.0 4.0 <= V DF <= 5.0 5.0 < V DF <= 6.0 Operating Voltage VDD Nch VDF (T)=1.6V to 6.0V VDS=0.5V VDD =1.0V VDD =2.0V VDD =3.0V Output Current IOUT VDD =4.0V VDD =5.0V Pch VDS=2.1V -10.0 -2.0 VDD =7V (with CMOS output) Temperature Characteristics VDF Topr.V DF -40oC<= Topr<= 85oC 1.0 3.0 5.0 6.0 7.0 2.2 7.7 10.1 11.5 13.0 mA 1.2 Test Condition Min VDF x0.98 2 0.9 1.0 1.1 1.2 2 Typ VDF Max V DF x1.02 8 2.7 3.0 3.2 3.6 4.0 6.5 V A Units V %
-100 0.2
ppm/ oC ms
Propagation Time tDLY (VDR -->V OUT inversion) Note: VDF(T) : Established Detect Voltage Value Release Voltage : VDR = VDF + VHYS
12
AME, Inc.
AME8550
Voltage Detector
n Functional Description
(CMOS output without delay)
1. When input voltage (VDD) rises above detect voltage (VDF), output voltage (VOUT) will be equal to VDD. ( A condition of high impedance exists with Nch open drain output configurations. ) 2. When input voltage (VDD) falls below detect voltage (VDF), output voltage (VOUT) will be equal to the ground voltage (VSS) level. 3. When input voltage (VDD) falls to a level below that of the minimum operating voltage (VMIN), output will become unstable. In this condition, VDD will equal the pulled-up output ( should output be pulled-up.) 4. When input voltage (VDD) rises above the ground voltage (VSS) level, output will be unstable at levels below the minimum operating voltage (VMIN). Between the VMIN and detect release voltage (VDR) levels, theground voltage (VSS) level will be maintained. 5. When input voltage (VDD) rises above detect release voltage (VDR), output voltage (VOUT) will be equal to VDD. ( A condition of high impedance exists with Nch open drain output configurations. ) 6. The difference between VDR and VDF represents the hysteresis range.
n Functional Description
(CMOS output with delay)
1. When input voltage (VDD) rises above detect voltage (VDF), output voltage (VOUT) will be equal to VDD. ( A condition of high impedance exists with Nch open drain output configurations. ) 2. When input voltage (VDD) falls below detect voltage (VDF), output voltage (VOUT) will be equal to the ground voltage (VSS) level. 3. When input voltage (VDD) falls to a level below that of the minimum operating voltage (VMIN), output will become unstable. In this condition, VDD will equal the pulled-up output ( should output be pulled-up.) 4. When input voltage (VDD) rises above the ground voltage (VSS) level, output will be unstable at levels below the minimum operating voltage (VMIN). Between the VMIN and detect release voltage (VDR) levels, theground voltage (VSS) level will be maintained. 5. When input voltage (VDD) rises above detect release voltage (VDR), output voltage (VOUT) will be equal to VDD after TD delay time. Q = V x C = I x TD VxC T= I V=VREF VREF * 1nF For Example, TD=
75nA ( A condition of high impedance exists with Nch open drain output configurations. ) 6. The difference between VDR and VDF represents the hysteresis range.
n Timing Chart
6
Input Voltage (VDD) Detect Release Voltage (VDR) Detect Voltage (VDF)
n Timing Chart
6
Input Voltage (VDD) Detect Release Voltage (VDR) Detect Voltage (VDF)
Min. Operating Voltage (VMIN) Ground Voltage (Vss) Output Voltage (VOUT) TD
Min. Operating Voltage (VMIN) Ground Voltage (Vss) Output Voltage (VOUT)
Ground Voltage (Vss) 1 2 3 4 5 1 2 3 4 5
Ground Voltage (Vss)
13
AME, Inc.
AME8550
Voltage Detector
n Notes on Use
1. When a resistor is connected between the VDD pin and the input with CMOS output configurations, oscillation may occur as a result of voltage drops at RIN if load current (IOUT) exists. ( refer to 5 - (1) below ) 2. When a resistor is connected between the VDD pin and the input with CMOS output configurations, irrespective of Nch output configurations, oscillation may occur as a result of through current at the time of voltage release even if load current (IOUT) does not exist.( refer to 5 - (1)(2) below ) 3. With a resistor connected between the VDDpin and the input, detect and release voltage will rise as a result of the IC's supply current flowing through the VDD pin. 4. In order to stabilise the IC's operations, please ensure that VDD pin's input frequency's rise and fall times are more than several sec / V. 5. Oscillation
VSS
(2) Oscillation as a result of through current Since the AME8550 series are CMOS ICS, through current will flow when the IC's internal circuit switching operates(during release and detect operations ).Consequently, oscillation is liable to occur as a result of drops in voltage at the through current's resistor (RIN) during release voltage operations. ( refer to diagram 2 ) Since hysteresis exists during detect operations, oscillation is unlikely to occur.
Input
RIN RINxIOUT voltage drop
AME8550
IOUT VDD VOUT
(1) Output current oscillation with the CMOS output configuration When the voltage applied at IN rises, release operations commence and the detector's output voltage increases. Load current (IOUT) will flow at RL. Because a voltage drop ( RIN x IOUT) is produced at the RIN resistor, located between the input (IN) and the VDD pin, the load current will flow via the IC's VDD pin. The voltage drop will also lead to a fall in the voltage level at the VDD pin. When the VDD pin voltage level falls below the detect voltage level, detect operations will commence. Following detect operations, load current flow will cease and since voltage drop at RIN will disappear, the voltage level at the VDD pin will rise and release operations will begin over again. Oscillation may occur with this " release - detect - release " repetition. Further, this condition will also appear via means of a similar mechanism during detect operations. Diagram1
Input
RIN RINxISS* voltage drop
AME8550
VDD VSS Iss* (includes through current) VOUT
Diagram2
14
AME, Inc.
AME8550
AME8550-1.9V
160 14
Voltage Detector
AME8550-1.9V
NMOS Sinking Current (mA)
0.8 0.9 1
NMOS Sinking Current (uA)
140 120 100 80 60 40 20 0 0 0.1
VDD=0.8V
12 10 8 6 4 2 0 0.00
VDD=0.7V
0.2
0.3
0.4
0.5
0.6
0.7
0.25
0.50
0.75
1.00
1.25
1.50
1.75
VDS (V)
VDS (V)
AME8550-2.7V
250 40
AME8550AEETA270
NMOS Sinking Current (mA)
VIN=2.5V 35 30 VIN=2.0V 25 20 VIN=1.5V 15 10 5 VIN=1.0V
NMOS Sinking Current (uA)
200
150
100
50
0 0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0 0.00
0.50
1.00
1.50
2.00
2.50
3.00
VDS (V)
VDS (V)
AME8550-4.6V
180 160 50
AME8550-4.6V
45 VIN=4.0V VIN=3.5V VIN=3.0V VIN=2.5V VIN=2.0V
VDD=0.8V
NMOS Sinking Current (mA)
NMOS Sinking Current (uA)
140 120 100 80 60 40 20 0 0.0
40 35 30 25 20 15 10 5 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 VIN=1.5V
VDD=0.7V
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
3.5
4.0
VDS (V)
VDS (V)
15
AME, Inc.
AME8550
AME8550-1.9V
16 9 VDS=2.1V 14 12 10 8 6 VDS=0.5V 4 2 0 0.0 0.5 VDS=1.0V
Voltage Detector
AME8550-1.9V
NMOS Sinking Current (mA)
8 7 6 5 4 3 2 1 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0.0 0.5 1.0 1.5 2.0
PMOS Sourcing Current (mA)
VDS=1.5V
Input Voltage (V)
Input Voltage (V)
AME8550AEETA270
9 16 VDS=2.1V 14 12 VDS=1.5V 10 8 6 4 2 0 0 0.0 0.5 1.0 VDS=0.5V
AME8550-2.7V
NMOS Sinking Current (mA)
8 7 6 5 4 3 2 1
PMOS Sourcing Current (mA)
VDS=1.0V
1.5
2.0
2.5
3.0
0. 5
3. 0
0. 0
3. 5
2. 0
5
5
5. 0
4. 0
1. 5
5. 5
0
4.
0
Input Voltage (V)
1.
2.
Input Voltage (V)
AME8550-4.6V
10 16
6.
AME8550-4.6V
VDS=2.1V
NMOS Sinking Current (mA)
PMOS Sourcing Current (mA)
9 8 7 6 5 4 3 2 1 0 0 1 2 3 4 5
14 12 10 8 6 4 2 0 VDS=0.5V VDS=1.0V
VDS=1.5V
Input Voltage (V)
16
2 1. 6 2. 0 2. 4 2. 8 3. 2 3. 6 4. 0 4. 4 4. 8 5. 2 5. 6 6. 0
0
4 0.
0.
0.
8
1.
Input Voltage (V)
AME, Inc.
AME8550
Supply Current vs. Input Voltage (2.7V)
3.0
Voltage Detector
Output Voltage vs. Input Voltage (2.2V)
3.5 3.0 2.5 2.0
2.5
Supply Current (uA)
2.0
1.5
Output Voltage (V)
VIN down
1.5 1.0 0.5 0.0
1.0
VIN up
0.5
0.0 0 1 2 3 4 5
0
0.5
1
1.5
2
2.5
3
Input voltage (V)
Input Voltage (V)
Output Voltage vs. Input Voltage (2.7V)
3.5 3.0 2.5
Output Voltage (V)
VIN down
2.0
VIN up
1.5 1.0 0.5 0.0 0 0.5 1 1.5 2 2.5 3
Input Voltage (V)
17
AME, Inc.
AME8550
Voltage Detector
n Package Dimension
SOT-23
Top View D Side View
SYMBOLS
C
MILLIMETERS MIN MAX
1.40 0.15 0.50 0.25 3.10 1.80
INCHES MIN
0.0394 0.0000 0.0138 0.0035 0.1063 0.0551
MAX
0.0551 0.0059 0.0197 0.0098 0.1220 0.0709
A A1 b
E H L
1.00 0.00 0.35 0.09 2.70 1.40
C D E
e
c 1
e H L 1
1.90 BSC 2.40 3.00
0.0748 BSC 0.09449 0.11811 0.0138BSC 0o 10 o
Front View
0.35BSC 0o 10o
TSOT-23
Top View D Side View C
A1
b
A
SYMBOLS A+A1 b C D E e H L
MILLIMETERS MIN MAX
1.30 0.50 0.25 3.10 1.80
INCHES MIN
0.0315 0.0138 0.0031 0.1063 0.0472
MAX
0.0512 0.0197 0.0098 0.1220 0.0709
L
0.80 0.35 0.08 2.70 1.20
E
H
e
c 1
1.90 BSC 2.40 3.00
0.0748 BSC 0.09449 0.11811 0.0138BSC
o
0.35BSC 0
o
Front View
1
A
10
0o
10 o
18
A1
b
AME, Inc.
AME8550
Voltage Detector
n Package Dimension
SOT-25
Top View D L Side View
SYMBOLS A A1 b D E e H L 1 S1
A
MILLIMETERS MIN
0.00 0.30 2.70 1.40
INCHES MIN
0.0000 0.0118 0.1063 0.0551
MAX
0.15 0.55 3.10 1.80
MAX
0.0059 0.0217 0.1220 0.0709
1.20REF
0.0472REF
H
E
S1 e
c 1
1.90 BSC 2.60 3.00
0.07480 BSC 0.10236 0.11811 0.0146BSC
o
0.37BSC 0
o
Front View
10
0o
10o
0.95BSC
0.0374BSC
b
TSOT-25
Top View D L Side View
A1
SYMBOLS A+A1 b
MILLIMETERS MIN
0.90 0.30 0.09 2.70 1.40
INCHES MIN
0.0354 0.0118 0.0035 0.1063 0.0551
MAX
1.25 0.50 0.25 3.10 1.80
MAX
0.0492 0.0197 0.0098 0.1220 0.0709
E
c D E
S1 e c 1
H
e H L 1
1.90 BSC 2.40 3.00
0.07480 BSC 0.09449 0.11811 0.0138BSC
o
0.35BSC 0
o
Front View A
10
0o
10o
S1
0.95BSC
0.0374BSC
b
A1
19
AME, Inc.
AME8550
Voltage Detector
n Package Dimension
SOT-89
Top View D D1 H
POLISH
Side View
SYMBOLS A A1
E
MILLIMETERS MIN
1.39
INCHES MIN MAX
MAX
1.60
0.05472 0.06299 0.0315REF 0.01378 0.01732 0.17283 0.1811
0.8REF 0.35 4.39 1.35 2.28 0.44 4.60 1.83 3.60
C D D1 E
C
A1
0.05315 0.07205 0.08976 0.14173 0.1181REF 0.0276REF 0.0590REF
S1 e Front View
MATTE FINISH
e H S1
3.00REF 0.70REF 1.50REF
A
POLISH
20
www.ame.com.tw
E-Mail: sales@ame.com.tw
Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. (c) AME, Inc. , July 2004 Document: 2051-DS8550-F
Corporate Headquarter
AME, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989
U.S.A (Subsidiary)
Analog Microelectronics, Inc.
3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489

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