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MAX1612EEE PDF даташит

Спецификация MAX1612EEE изготовлена ​​​​«Maxim Integrated» и имеет функцию, называемую «Bridge-Battery Backup Controllers for Notebooks».

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Номер произв MAX1612EEE
Описание Bridge-Battery Backup Controllers for Notebooks
Производители Maxim Integrated
логотип Maxim Integrated логотип 

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MAX1612EEE Даташит, Описание, Даташиты
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.









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MAX1612EEE Даташит, Описание, Даташиты
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 _______________________________________________________________________________________









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MAX1612EEE Даташит, Описание, Даташиты
Bridge-Battery Backup Controllers
for Notebooks
ELECTRICAL CHARACTERISTICS (continued)
(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
DC-DC CONVERTER
FB Trip Point
FB Input Current
LX Switch Current Limit
LX Off-Leakage
LX On-Resistance
SYMBOL
VFB
IFB
IPEAK
RDSON
LX Zero Crossing Trip Threshold
BBON Logic Input Low Voltage
TIMER BLOCK
CC Output Current
CD Oscillator Frequency
CC Oscillator Frequency
ISET Logic Input Low Voltage
CD to CC Current Matching
CDOSC
CCOSC
CONDITIONS
MIN
VFB = 2.1V
R BBON = 100kto GND
VLX = 12V
ILX = 200mA
Voltage that allows a new cycle, defined as
(VBBATT - VLX) (see DC-DC Converter section)
1.95
0.580
-0.2
V CCMD = 0, CC = GND
CCD = 3.3nF
CCC = 33nF
Resets the counter
V DCMD = 0, CD = GND
4.35
600
60
0.4
-1
TYP
0.15
0.835
0.01
0.5
-0.1
5.00
758
75.8
MAX UNIT
2.05
10
1.100
10
1.5
0.2
2.1
V
nA
A
µA
V
V
5.65 µA
950 Hz
95 Hz
V
1%
Logic Input Low Level
VIL CCMD, DCMD
0.8 V
Logic Input High Level
VIH CCMD, DCMD
Logic Input Leakage Current
I(CCMD),
I(DCMD)
V CCMD, V DCMD = 0 to VLRO
Note 1: Specifications from 0°C to -40°C are guaranteed by design, not production tested.
2.2
V
1 µA
(Circuit of Figure 3, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
DISCHARGE TIME
vs. OUTPUT CURRENT
120
2 CELLS (SANYO N-50AAA)
100
80
VOUT = 5V
60 VOUT = 7V
40
20
0
0 5 10 15 20 25 30 35 40 45
OUTPUT CURRENT (mA)
OSCILLATOR FREQUENCY
vs. CAPACITANCE
100k
10k
1k
100 CD
CC
10
1
0.1 1 10 100 1000
CAPACITANCE (nF)
EFFICIENCY vs. OUTPUT CURRENT
(BBATT = 3.6V)
90
80
VOUT = 5V
70
60
VOUT = 7V
VOUT = 6V
50
40
30
20
10
0
1µ
BBATT = 3.6V
RBBON = 240k
NOTE: DC-DC
CONVERTER
SUPPLIES VLRI
10µ 100µ 1m 10m 100m
OUTPUT CURRENT (A)
1
_______________________________________________________________________________________ 3










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Номер в каталогеОписаниеПроизводители
MAX1612EEEBridge-Battery Backup Controllers for NotebooksMaxim Integrated
Maxim Integrated

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