MAX1807EUB Maxim Integrated Products, MAX1807EUB Datasheet

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MAX1807EUB

Manufacturer Part Number
MAX1807EUB
Description
Manufacturer
Maxim Integrated Products
Datasheet

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MAX1807EUB
Manufacturer:
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Quantity:
20 000
Part Number:
MAX1807EUB+T
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The MAX1807/MAX1808 monitor up to five supply rails
for an overvoltage condition and provide a latched out-
put when any one of the five supplies exceeds the trip
thresholds. The latched output drives an external P-
channel load switch to remove power when an over-
voltage condition is detected. The latch is reset when a
logic low is input to ON or the power supply is cycled.
The MAX1807 provides a 28V open-drain fault output
that can be used to trigger an alert, trip a resetable
fuse, or for other purposes. The MAX1808 includes a
low-battery comparator with hysteresis to drive the DP
output high, turning off the external P-channel switch
when the input voltage is too low.
The MAX1807/MAX1808 are available in a miniature 10-
pin µMAX package.
19-1791; Rev 0; 10/00
Pin Configuration and Typical Operating Circuit appear at
end of data sheet.
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
________________________Applications
Notebook Computers
Power-Supply Modules
Multi-Output Power Supplies
(MAX1808)
IN1
IN2
IN3
IN4
IN5
ON
TH
________________________________________________________________ Maxim Integrated Products
General Description
1V REF
+
+
+
+
+
+
_
_
_
_
_
-
Micropower Adjustable Overvoltage
+
_
INTERNAL
SUPPLY
2.5V
REF OK
POWER-ON
MAX1807
MAX1808
(60µs)
RESET
o Five 3% Accurate Overvoltage Comparators
o Series PFET Gate Driver with VGS Limiter
o 21µA Quiescent Supply Current
o 4µA Shutdown Current
o 4.4V to 28V Operating Voltage Range
o 3% Accurate Comparator with 10% Hysteresis for
o 28V Open-Drain N-Channel Output (MAX1807)
o Small 10-Pin µMAX Package
R
S
Protection Controllers
MAX1807EUB
MAX1808EUB
Low-Battery Detection (MAX1808)
Q
PART
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
Ordering Information
Functional Diagram
POWER
DRIVER
PMOS
PIN-PACKAGE
10 µMAX
10 µMAX
Features
FAULT
(MAX1807)
V
DP
GND
DD
1

Related parts for MAX1807EUB

MAX1807EUB Summary of contents

Page 1

... Series PFET Gate Driver with VGS Limiter o 21µA Quiescent Supply Current o 4µA Shutdown Current o 4.4V to 28V Operating Voltage Range o 3% Accurate Comparator with 10% Hysteresis for Low-Battery Detection (MAX1808) o 28V Open-Drain N-Channel Output (MAX1807) o Small 10-Pin µMAX Package PART MAX1807EUB MAX1808EUB POWER-ON REF OK RESET (60µ ...

Page 2

Micropower Adjustable Overvoltage Protection Controllers ABSOLUTE MAXIMUM RATINGS IN1_ GND.......................................................-0.3V to +6V , FAULT to GND........................................-0.3V to +30V ON GND..................................................-0. Continuous Power Dissipation 10-Pin µMAX (derate 5.6mW/°C above +70°C)...........448mW Stresses beyond those ...

Page 3

Micropower Adjustable Overvoltage ELECTRICAL CHARACTERISTICS (continued 15V, V –V = 0.5V IN1 IN5 PARAMETER SYMBOL DP Source Current (PMOS Turn-Off ent ( ...

Page 4

Micropower Adjustable Overvoltage Protection Controllers (Typical Operating Circuit 15V SUPPLY CURRENT vs. SUPPLY VOLTAGE +85° +25° -40° ...

Page 5

Micropower Adjustable Overvoltage (Typical Operating Circuit 15V IN_ PROPAGATION DELAY vs. SUPPLY VOLTAGE +85° +25° -40° 10mV OVERDRIVE ...

Page 6

Micropower Adjustable Overvoltage Protection Controllers PIN NAME Overvoltage Detect Comparator Input. When any input exceeds 1V, the fault latch is set. Connect 1–5 IN1–IN5 unused inputs to GND. 6 GND Ground Logic Input. ON turns on internal reference when high. ...

Page 7

Micropower Adjustable Overvoltage The DP driver can sink and source significant current and achieves fast turn-on and turn-off times even with large P-channel switches. Adding a resistor in series with DP can increase turn-on and turn-off times. To slow the ...

Page 8

Micropower Adjustable Overvoltage Protection Controllers Table 1. MAX1807/MAX1808 State Table < < V < 4. >4. >4.0V 1 <1V >4.0V 1 >1.1V >4.0V 1 >1.1V viding additional hysteresis. ...

Page 9

Micropower Adjustable Overvoltage 6. 0.01µF 1M MAX1808 ON GND THRESHOLDS: 1) 3.63V 2) 5.5V 3) 1.85V 4) 2.0V 5) 2.75V _______________________________________________________________________________________ Protection Controllers Typical Operating Circuit 5V 3.3V DP 402k IN1 IN2 150k IN3 IN4 IN5 ...

Page 10

... Maxim reserves the right to change the circuitry and specifications without notice at any time. implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...

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