ILC5142CS [IMPALA]
Micro Peripheral IC;
| 型号： | ILC5142CS |
| 厂家： | 
Impala Linear Corporation |
| 描述： | Micro Peripheral IC |
| 文件： | 总6页 (文件大小：63K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Impala Linear Corporation
Advance
ILC5140/5141/5142
CMOS Multilevel Voltage Detector
General Description
Features
The ILC514X is an innovative, multilevel voltage detector,
designed to monitor the terminal voltage of a power source
and provide up to four independent flags when the voltage
levels drop below designated levels. The ILC514X is
unique in its design because one device can now signal the
user when a discharging battery goes below four (4) differ-
ent threshold voltages and because it requires no external
precision components to monitor these voltage levels. The
open drain flags are asserted when the terminal voltage
goes below their designated thresholds and are de-assert-
ed 140ms after the thresholds are exceeded. Additionally,
the ILC514X has a manual reset pin that allows the system
to assert all flags for a minimum of 200ms.
• Four levels of a single terminal voltage monitored
• No precision external components
• < 10µA Quiescent current
• Available in three output configurations
ILC5140 Open Drain RESET
ILC5141 Push Pull RESET
ILC5142 Push Pull RESET
• Threshold accuracies within ±1%
• Small MSOP10 plastic package
• Factory preset threshold voltages
• Manual reset input pin
• Minimum 140ms delay on reset
Applications
Built using Impala’s prorprietary Analog CMOS process, the
ILC514X is packaged in a spacesaving MSOP10 package.
Quiescent current is below 10µA. The threshold values for
the reset flags are factory set. Alternate values may be dis-
cussed with Impala Product Marketing. Threshold values
are accurate to within ±1%. The device is available in three
output configurations: Open Drain RESET, Push Pull
RESET and Push Pull RESET.
• Handheld PC’s
• PDA’s
• Notebook PC’s
• Battery electronics
• Medical Instrumentation
• Personal Electronics
• Personal Communicators
Ordering Information* TA = =40°C to +85°C
ILC514XCS
10-Pin MSOP
Typical Circuit
MR
Rpullup
ILC5140
Flag 1
+
Flag 2
Flag 3
Flag 4
Battery
Impala Linear Corporation
(408) 574-3939
ILC514x 1.1
www.impalalinear.com
Dec 2000
1
Advance
CMOS Multilevel Voltage Detector
Pin-Package Configurations
To Be Assigned
Pin Number
TBD
Name
VIN
Pin Description and Function
Voltage input from power source - battery or power supply
IC Ground Pin
TBD
GND
CP+
CP-
CPVSS
MR
TBD
Charge Pump Capacitor +
TBD
Charge Pump Capacitor -
TBD
Charge Pump VSS
TBD
Manual Reset Input (Connects to CPVSS pin)
TBD
F1
Connection for output flags. Flags are asserted in order of decreasing voltage
thresholds. F1 is asserted at a higher voltage than F2, F2 is asserted at a high-
er voltage than F3 and F3 is asserted at a higher voltage than F4. Output flags
are: ILC5140 - Open Drain RESET, ILC5141 - Push Pull RESET, ILC5142 -
Push Pull RESET
TBD
F2
TBD
F3
TBD
F4
Impala Linear Corporation
ILC514x 1.1
www.impalalinear.com
(408) 574-3939
Dec 2000
2
CMOS Multilevel Voltage Detector
Advance
Absolute Maximum Ratings (Note 1)
Parameter
Supply Voltage (V+ to GND, or GND to OUT)
All Other Inputs
Symbol
VCC
Ratings
+6
Units
V
VIN
+6
V
Output Current Per Flag
IOUT
20
mA
V
Voltage on FLAG pin relative to GND
Rate or Rise, VCC
VFlg
VIN + 0.3V
100
V/µs
mW
°C
Continuous Power Dissipation (T= +85°C)
Operating Temperature Ranges
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature (soldering, 10sec)
Package Thermal Resistance
PD
TA
470
-40 to +85
170
TJ(MAX)
Tstg
°C
-40 to +125
300
°C
°C
θJA
TBD
°C/W
DC Electrical Characteristics ILC514X
Unless otherwise specified, all limits are at TA = 25°C
Boldface limits apply over the operating temperature range.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Operating Supply Voltage
(RESET in correct state)
VCC
V
TA = 0°C to +85°C
1.8
5.5
TA = -40°C to +105°C
2.0
5.5
VTH-1%
30
V
V
VTH-1%
VTH
10
Reset Threshold Voltage
Supply Current
µA
ICC
VCC < 3.6V
-VCC
V
MR Input Voltage
VCC < 3.6V
Output Sink Current
3.2
mA
V
Output Voltage Low, RESET
Output Voltage High, RESET
Reset Threshold Tempco
VOL
VOH
0.8VCC
0.4
V
30-50
ppm/°C
AC Electrical Characteristics ILC514X
Parameter
Symbol
Condtions
Min
Typ
Max
Units
µs
20
20
MR Minimum Pulse Width
VCCDetect to Flag Enable
VCC Detect to Flag Enable
µs
ms
120
240
Impala Linear Corporation
ILC514x 1.1
www.impalalinear.com
(408) 574-3939
Dec 2000
3
Advance
CMOS Multilevel Voltage Detector
VTH
VTH
1
2
VTH
VTH
1
2
VTH
VTH
3
4
VTH
3
VTH4
Time (ms)
Time (ms)
140ms
Minimum
Delay
140ms
Minimum
Delay
Flag 1
Flag 1
Flag 2
Flag 2
Flag 3
Flag 4
Flag 3
Flag 4
VTH
140ms
Minimum
Delay
Time (ms)
Flag
Clock
400ms
∆t
VTH
∆V = 20mV
VTH -20mV
Time VCC
140 ms
Minimum
Delay
Flag
Clock
Impala Linear Corporation
ILC514x 1.1
www.impalalinear.com
(408) 574-3939
Dec 2000
4
CMOS Multilevel Voltage Detector
Advance
Threshold Detect to Flag Enable
Detailed Descripton
The ILC514X is designed to monitor the terminal voltage of a The ILC5140 samples the input voltage once every 400 ms.
power source such as a battery and to assert a flag depend- This sampling rate was chosen to conserve battery life and
ing on the internally set threshold voltages. Up to four flags at the same time keep a reasonble vigil on the terminal volt-
can be used to warn of declining stages of a battery’s life. age level. Once the thrshold has been passed, the flag
The flags are arranged in order of decreasing threshold val- enable function reacts within 30µs.
ues; therefore Flag 1 is asserted at VTH1, Flag 2 is asserted
In addition to the 400ms sampling, a sample and hold cir-
cuit compares the input voltage to the most recent sample
and if there is a DV greater than 20mV the input sampling
is turned on continuously until either a flag is asserted or the
threshold is regained. If, during the continuous sampling a
thrshold is crossed, the flag is enabled. This method inher-
ently prevents accidental tripping of the flag during minor
input voltage level glitches.
at a voltage VTH2 which is lower than VTH1 and so on. The
ILC514C is ideally suited for systems such as PDA’s, note-
books and personal electronics where multiple warning and
resets are desirable. An example of such a requirement is in
a PDA, where Flag 1 is asserted at VTH1 = 2.9V “LOW BAT-
TERY WARNING” flag; Flag 2 is asserted at VTH2 = 2.7V
“DISABLE CMOS WRITE”; Flag 3 is asserted at VTH3 = 2.5V
“DISABLE IrDA PORT” and Flag 4 is asserted at VTH4 = 2.3V
“DISABLE SYSTEM EXCEPT CHARGING.”
Once the threshold is crossed on an increasing voltage
level, the flag is disabled 140ms after such a threshold is
detected. This is a minimum time since an addtional 400ms
may be added if the threshold is not detected at the begin-
ning of a regular sampling.
RESET AND RESET
The ILC514X has three output configurations: Open Drain
(ILC5140) RESET, Push Pull (ILC5141) RESET and Push
Pull (ILC5142) RESET
Voltage Thrsholds for the Flags
The flags are labelled Flag 1, Flag 2, Flag 3, Flag 4.
Voltage thrsholds are arranged in order of decreasing volt-
age levels, therefore Flag 1 will have a higher threshold
than Flag 2 and so on.
Voltage Thresholds
The ILC5140 series will be offered in a variety of voltage
thresholds corresponding to industry standard requirements.
In addition, customer defined voltage thresholds are avail-
able on a special ordering basis. Please consult Impala
marketing for conditions surrounding custom thresholds.
Impala Linear Corporation
(408) 574-3939
ILC514x 1.1
www.impalalinear.com
Dec 2000
5
Advance
CMOS Multilevel Voltage Detector
Packaging Information
M Package, 8-Pin Small-Outline
0.197
0.190
0.244
0.228
0.155
0.150
Pin 1 identifier
0.012
0.009
0.8°
0.069
0.053
0.060
0.040
0.050
0.016
0.011
0.004
0.019
0.013
N Package, 8-Pin Plastic Dual In-Line
0.019
0.013
0.260
0.240
0.260
0.240
0.260
0.240
0.260
0.240
0.260
0.240
0.260
0.240
0.260 0.260
0.240
0.240
Devices sold by Impala Linear Corporation are covered by the warranty and patent indemnification provisions appearing
in its Terms of Sale only. Impala Linear Corporation makes no warranty, express, statutory, implied, or by description
regarding the information set forth herein or regarding the freedom of the described devices from patent infringement.
Impala Linear Corporation makes no warranty of merchantability or fitness for any purpose. Impala Linear Corporation
reserves the right to discontinue production and change specifications and prices at any time and without notice.
Life Support Policy
Impala Linear Corporation’s products are not authorized for use as critical components in life support devices or systems.
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use pro-
vided in the labelling, can be reasonably expected to result in a significant injury to the user.
This product is intended for use in normal commercial applications. Applications requiring an extended temperature
range, unusual environmental requirements, or high reliability applications, such as military and aerospace, are specif-
ically not recommended without additional processing by Impala Linear Corporation.
2. A critical component is any component of a life support device or system whose failure to perform can be reason-
bly expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
Impala Linear Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in an
Impala Linear Corporation product. No other circuits, patents, licenses are implied.
Impala Linear Corporation
(408) 574-3939
ILC514x 1.1
www.impalalinear.com
Dec 2000
6
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