MIC833BM5 Micrel Inc, MIC833BM5 Datasheet

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MIC833BM5

Manufacturer Part Number
MIC833BM5
Description
Manufacturer
Micrel Inc
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
MIC833BM5
Manufacturer:
MICREL
Quantity:
41 300
Part Number:
MIC833BM5
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
General Description
The MIC833 is a micropower precision dual voltage com-
parator with an on-chip reference and latch.
High- and low-voltage thresholds are adjusted indepen-
dently, allowing for wide hysteresis. Three external resistors
determine the threshold voltages. Voltage detection thresh-
olds are accurate to 1%.
Supply current is extremely low (1 A, typical), making it ideal
for portable applications.
The MIC833 is supplied in Micrel’s IttyBitty™ 5-lead SOT-23-
5 package.
See the MIC2778 for applications requiring an output delay.
Typical Application
IttyBitty™ is a trademark of Micrel, Inc.
January 2000
MIC833
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
Ordering Information
Part Number
MIC833BM5
R1
R2
R3
V
IN
V
DD
5
3
1
VDD
LTH
HTH
MIC833
Marking
1
B11
GND
OUT
Features
• Optimized for PDAs, cellular telephones, pagers,
• Inputs and output can pulled up to 6V
• Independently adjustable high- and
• High 1% voltage threshold accuracy
• Extremely low 1 A typical supply current
• Immune to brief input transients
• 5-lead SOT-23 package
Applications
• PDAs
• Pagers
• Cordless phones
• Consumer electronics
• Embedded controllers
• Personal electronics
Comparator and Reference with Adj. Hystersis
and other battery-powered devices
regardless of supply voltage
low-voltage thresholds
V
4
2
PULL-UP
R
Accuracy
PU
V
V
V
V
1.5V
LTH
REF
LTH(max)
PULL-UP(max)
1%
> V
= 1.24V
V
Advance Information
V
OUT
HTH
DD
= V
HTH(max)
= 6V
5.5V
Temperature Range
MIC833
–40 C to +85 C
= 6V
SOT-23-5
Package
MIC833
Micrel

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MIC833BM5 Summary of contents

Page 1

... Extremely low 1 A typical supply current • Immune to brief input transients • 5-lead SOT-23 package Applications • PDAs • Pagers • Cordless phones • Consumer electronics • Embedded controllers • Personal electronics Ordering Information Part Number Marking Accuracy MIC833BM5 B11 PULL-UP MIC833 VDD ...

Page 2

MIC833 Pin Configuration Pin Description Pin Number Pin Name 1 HTH 2 GND 3 LTH 4 OUT 5 VDD MIC833 LTH GND HTH OUT VDD SOT-23-5 (M5) Pin Function High-Voltage Threshold (Input): Analog input to ...

Page 3

MIC833 Absolute Maximum Ratings Supply Voltage (V ) ..................................... –0.3V to +7V DD Input Voltages ( .......................................... +7V LTH HTH Output Current (I ) ................................................. 20mA OUT Storage Temperature (T ) ....................... – +150 C ...

Page 4

MIC833 Block Diagram V LTH V HTH Functional Description The MIC833 monitors a voltage and detects when it is below or above two independently programmed levels. Voltage Low Output The output (OUT active-high, open-drain output which sinks current ...

Page 5

MIC833 Applications Information Output Since the MIC833 output is an open-drain MOSFET, most applications will require a pull-up resistor. The value of the resistor should not be too large or leakage effects may dominate. 470k is the maximum recommended value. ...

Page 6

MIC833 Example Application The battery charger of Figure 3 uses the MIC833 to detect a low-battery voltage condition (V ) and enables a constant- DIS current source (I ). Charging current is enabled until a CHG charged-battery voltage condition (V ...

Page 7

MIC833 Package Information 1.90 (0.075) REF 0.95 (0.037) REF 3.02 (0.119) 2.80 (0.110) 0.50 (0.020) 0.35 (0.014) January 2000 1.75 (0.069) 3.00 (0.118) 1.50 (0.059) 2.60 (0.102) DIMENSIONS: MM (INCH) 1.30 (0.051) 0.90 (0.035 0.15 (0.006) 0.60 (0.024) ...

Page 8

... TEL This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. MIC833 + 1 (408) 944-0970 http://www ...

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