http://www.www.datasheet4u.com

900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1612 Datasheet

Bridge-Battery Backup Controllers for Notebooks

No Preview Available !

MAX1612 pdf
19-4785; Rev 0; 11/98
EVFAOLLULAOTWIOSNDKAITTAMSAHNEUEATL
Bridge-Battery Backup Controllers
for Notebooks
General Description
The MAX1612/MAX1613 manage the bridge battery
(sometimes called a hot-swap or auxiliary battery) in
portable systems such as notebook computers. They
feature a step-up DC-DC converter that boosts 2-cell or
3-cell bridge-battery voltages up to the same level as
the main battery. This voltage boosting technique
reduces the number of cells otherwise required for a 6-
cell plus diode-OR bridging scheme, reducing overall
size and cost. Another key feature is a trickle-charge
timer that minimizes battery damage caused by con-
stant charging and eliminates trickle-charge current
drain on the main battery once the bridge battery is
topped off.
These devices contain a highly flexible collection of
independent circuit blocks that can be wired together
in an autonomous stand-alone configuration or used in
conjunction with a microcontroller. In addition to the
boost converter and charge timer, there is a micropow-
er linear regulator (useful for RTC/CMOS backup as
well as for powering a microcontroller) and a high-pre-
cision low-battery detection comparator.
The two devices differ only in the preset linear-regulator
output voltage: +5.0V for the MAX1612 and +3.3V for
the MAX1613. Both devices come in a space-saving
16-pin QSOP package.
Applications
Notebook Computers
Portable Equipment
Backup Battery Applications
Features
o Reduce Battery Size and Cost
o Four Key Circuit Blocks
Adjustable Boost DC-DC Converter
NiCd/NiMH Trickle Charger
Always-On Linear Regulator (+28V Input)
Low-Battery Detector
o Low 18µA Quiescent Current
o Selectable Charging/Discharging Rates
o Preset Linear-Regulator Voltage
5V (MAX1612)
3.3V (MAX1613)
o 4V to 28V Main Input Voltage Range
o Internal Switch Boost Converter
o Small 16-Pin QSOP Package
PART
MAX1612EEE
MAX1613EEE
Ordering Information
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 QSOP
16 QSOP
Typical Operating Circuit
Pin Configuration
MAIN BATTERY
OR
WALL
ADAPTER
LRI
DC-DC
OUTPUT
V+
BBATT
AUXILIARY
BRIDGE
BATTERY
MAX1612
MAX1613
APPLICATION
CIRCUIT
MAX1630
DC-DC
CONVERTER
+3.3V
+5V
VCPU
TOP VIEW
ISET 1
BBATT 2
LX 3
LBO 4
BBON 5
DCMD 6
CCMD 7
FULL 8
MAX1612
MAX1613
QSOP
16 LRI
15 LRO
14 PGND
13 CD
12 CC
11 GND
10 LBI
9 FB
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1612 Datasheet

Bridge-Battery Backup Controllers for Notebooks

No Preview Available !

MAX1612 pdf
Bridge-Battery Backup Controllers
for Notebooks
ABSOLUTE MAXIMUM RATINGS
LRI, ISET to GND....................................................-0.3V to +30V
LX to GND ..............................................................-0.3V to +14V
PGND to GND .......................................................-0.3V to +0.3V
BBATT, LRO, CCMD, DCMD, FULL, BBON,
LBO to GND ..........................................................-0.3V to +6V
CC, CD, LBI, FB to GND...........................-0.3V to (VLRO + 0.3V)
FB, LBI, ISET, and BBATT Current......................................50mA
LRO Output Current ...........................................................50mA
Continuous Power Dissipation (TA = +70°C)
QSOP (derate 8.30mW/°C above +70°C) .................... 667mW
Operating Temperature Range
MAX1612/MAX1613EEE ...................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) ............................ +300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and 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 affect device reliability.
ELECTRICAL CHARACTERISTICS
(VLRI = VISET = 20V, CCMD = DCMD = BBON = LRO, VBBATT = 3V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNIT
Linear-Regulator Input Voltage
Range
MAX1612
VLRI
MAX1613
5.7 28
V
4 28
Linear-Regulator Quiescent
Current
V BBON 2V
ILRI V DCMD = 0, R BBON = 1Mto GND
(boost converter on)
18 28
µA
42 58
Linear-Regulator Output Voltage VLRO
0 ILRO 10mA
5.7V VLRI 28V
(MAX1612)
4V VLRI 28V
(MAX1613)
4.7 5.0 5.3
V
3.1 3.3 3.5
Linear-Regulator Output
Undervoltage Lockout
Threshold
VUVLO LRO rising hysteresis = 200mV
2.65 2.97 V
BATTERY CHARGER
ISET Leakage Current
IISET(LEAK) VISET = 28V, VBBATT = 0
0.3 5 µA
BBATT Leakage Current
IBBATT(LEAK) VISET = 0 or 28V, VBBATT = 6V
-5 5 µA
Charge-Switch On Voltage
IISET = 10mA, V CCMD = 0, VBBATT = 2V
0.5 1 1.3 V
Charge-Switch Loss Current
CCMD = GND, IISET = 10mA, VBBATT = 2V,
%loss = [(IISET - IBBATT) / IISET) · 100%
0.1 5 %
LOW-BATTERY COMPARATOR
LBI Falling Trip Voltage
LBI Rising Trip Voltage
LBI Input Current
LBO, FULL Output Leakage
Current
VLBTL
VLBTH
ILBI
VLBI = 1.9V
ILBO, IFULL V LBO = VFULL = 5.5V
1.76 1.8 1.84 V
1.955 2 2.045 V
0.2 10 nA
1 µA
LBO, FULL Output Voltage Low
ISINK = 1mA
0.4 V
LBI Comparator Response Time
tPD
Overdrive = 100mV
20 µs
2 _______________________________________________________________________________________


Part Number MAX1612
Description Bridge-Battery Backup Controllers for Notebooks
Maker Maxim
Total Page 12 Pages
PDF Download
MAX1612 pdf
MAX1612 Datasheet PDF
[partsNo] view html
View PDF for Mobile








Similar Datasheet

1 MAX161 CMOS 8-Bit 8Channel Data Acquisition System Maxim
Maxim
MAX161 pdf
2 MAX1610 Digitally Controlled CCFL Backlight Power Supplies Maxim
Maxim
MAX1610 pdf
3 MAX1611 Digitally Controlled CCFL Backlight Power Supplies Maxim
Maxim
MAX1611 pdf
4 MAX1612 Bridge-Battery Backup Controllers for Notebooks Maxim
Maxim
MAX1612 pdf
5 MAX16122 Dual Pushbutton Controllers Maxim Integrated
Maxim Integrated
MAX16122 pdf
6 MAX16123 Dual Pushbutton Controllers Maxim Integrated
Maxim Integrated
MAX16123 pdf
7 MAX16124 Dual Pushbutton Controllers Maxim Integrated
Maxim Integrated
MAX16124 pdf
8 MAX16125 Dual Pushbutton Controllers Maxim Integrated
Maxim Integrated
MAX16125 pdf
9 MAX16126 (MAX16126 / MAX16127) Load-Dump/Reverse-Voltage Protection Circuits Maxim Integrated Products
Maxim Integrated Products
MAX16126 pdf





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy