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MAX16038のメーカーはMaxim Integrated Productsです、この部品の機能は「(MAX16033 - MAX16040) Low-Power Battery Backup Circuits」です。 |
部品番号 | MAX16038 |
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部品説明 | (MAX16033 - MAX16040) Low-Power Battery Backup Circuits | ||
メーカ | Maxim Integrated Products | ||
ロゴ | |||
このページの下部にプレビューとMAX16038ダウンロード(pdfファイル)リンクがあります。 Total 21 pages
19-0882; Rev 0; 7/07
Low-Power Battery Backup
Circuits in Small µDFN Packages
General Description
The MAX16033–MAX16040 supervisory circuits reduce
the complexity and number of components required for
power-supply monitoring and battery control functions
in microprocessor (µP) systems. The devices signifi-
cantly improve system reliability and accuracy com-
pared to other ICs or discrete components. The
MAX16033–MAX16040 provide µP reset, backup-bat-
www.DataSheett4eUry.cosmwitchover, power-fail warning, watchdog, and
chip-enable gating features.
The MAX16033–MAX16040 operate from supply volt-
ages up to 5.5V. The factory-set reset threshold voltage
ranges from 2.32V to 4.63V. The devices feature a man-
ual-reset input (MAX16033/MAX16037), a watchdog
timer input (MAX16034/MAX16038), a battery-on output
(MAX16035/MAX16039), an auxiliary adjustable reset
input (MAX16036/MAX16040), and chip-enable gating
(MAX16033–MAX16036). Each device includes a
power-fail comparator and offers an active-low push-
pull reset or an active-low open-drain reset.
The MAX16033–MAX16040 are available in 2mm x
2mm, 8-pin or 10-pin µDFN packages and are fully
specified from -40°C to +85°C.
Applications
Portable/Battery-
Powered Equipment
POS Equipment
Critical µP/µC Power
Monitoring
Set-Top Boxes
Controllers
Computers
Fax Machines
Industrial Control
Real-Time Clocks
Intelligent Instrument
Pin Configurations and Typical Operating Circuit appear at
end of data sheet.
Features
♦ Low 1.2V Operating Supply Voltage
♦ Precision Monitoring of 5.0V, 3.3V, 3.0V, and 2.5V
Power-Supply Voltages
♦ Independent Power-Fail Comparator
♦ Debounced Manual-Reset Input
♦ Watchdog Timer, 1.6s Timeout
♦ Battery-On Output Indicator
♦ Auxiliary User-Adjustable RESETIN
♦ Low 13µA Quiescent Supply Current
♦ Two Available Output Structures:
Active-Low Push-Pull Reset
Active-Low Open-Drain Reset
♦ Active-Low Reset Valid Down to 1.2V
♦ Power-Supply Transient Immunity
♦ 140ms (min) Reset Timeout Period
♦ Small 2mm x 2mm, 8-Pin and 10-Pin µDFN
Packages
Ordering Information
PART*
TEMP RANGE PIN-
PKG
PACKAGE CODE
MAX16033LLB_ _+T -40°C to +85°C 10 µDFN-10 L1022-1
MAX16033PLB_ _+T -40°C to +85°C 10 µDFN-10 L1022-1
MAX16034LLB_ _+T -40°C to +85°C 10 µDFN-10 L1022-1
MAX16034PLB_ _+T -40°C to +85°C 10 µDFN-10 L1022-1
Ordering Information continued on last page.
*These parts offer a choice of reset threshold voltages. From the
Reset Threshold Ranges table, insert the desired threshold volt-
age code in the blank to complete the part number. See Selector
Guide for a listing of device features.
+Denotes a lead-free package.
T = Tape and reel.
Selector Guide
PART
MR WATCHDOG BATTON RESETIN CEIN/CEOU
MAX16033_
✓
✓
MAX16034_
✓
✓
MAX16035_
✓✓
MAX16036_
✓✓
MAX16037_
✓
MAX16038_
✓
MAX16039_
✓
MAX16040_
✓
Note: Replace “_” with L for push-pull or P for open-drain RESET and PFO outputs.
PFI, PFO
✓
✓
✓
✓
✓
✓
✓
✓
PIN-PACKAGE
10 µDFN-10
10 µDFN-10
10 µDFN-10
10 µDFN-10
8 µDFN-8
8 µDFN-8
8 µDFN-8
8 µDFN-8
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 Page Low-Power Battery Backup
Circuits in Small µDFN Packages
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 2.25V to 5.5V, VBATT = 3V, RESET not asserted, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA =
+25°C.) (Note 1)
PARAMETER
RESET OUTPUT
www.DataSheet4U.com
Reset Threshold
SYMBOL
VTH
VCC Falling Reset Delay
Reset Active Timeout Period
RESET Output Low Voltage
tRP
VOL
RESET Output High Voltage
RESET Output Leakage
Current
POWER-FAIL COMPARATOR
PFI Input Threshold
PFI Hysteresis
PFI Input Current
PFO Output Low Voltage
VOH
ILKG
VPFI
VOL
PFO Output High Voltage
VOH
PFO Leakage Current
PFO Delay Time
MANUAL RESET (MAX16033/MAX16037)
MR Input Voltage
VIL
VIH
Pullup Resistance to VCC
Minimum Pulse Width
Glitch Immunity
MR to Reset Delay
CONDITIONS
MIN
MAX160_ _ _L_46
MAX160_ _ _L_44
MAX160_ _ _L_31
MAX160_ _ _L_29
MAX160_ _ _L_26
MAX160_ _ _L_23
VCC falling at 10V/ms
RESET asserted ISINK = 1.6mA, VCC > 2.1V
ISINK = 100µA, VCC > 1.2V
MAX160_ _L only (push-pull), RESET not
asserted, ISOURCE = 500µA, VCC > VTH(MAX)
MAX160_ _P only (open drain), not asserted
4.50
4.25
3.00
2.85
2.55
2.25
140
0.8 x
VCC
VPFI falling
1.185
VPFI = 0V or VCC
Output asserted VCC > 2.1V, ISINK = 1.6mA
VCC > 1.2V, ISINK = 100µA
MAX160_ _L only (push-pull), VCC > VTH(MAX),
ISOURCE = 500µA, output not asserted
MAX160_ _P only (open drain), VPFO = 5.5V,
not asserted
VPFI + 100mV to VPFI - 100mV
-100
0.8 x
VCC
VCC = 3.3V
0.7 x
VCC
20
1
TYP
4.63
4.38
3.08
2.93
2.63
2.32
25
1.235
1
4
100
120
MAX
4.75
4.50
3.15
3.00
2.70
2.38
280
0.3
0.4
1
1.285
+100
0.3
0.4
1
0.3 x
VCC
165
UNITS
V
µs
ms
V
V
µA
V
%
nA
V
V
µA
µs
V
kΩ
µs
ns
ns
_______________________________________________________________________________________ 3
3Pages Low-Power Battery Backup
Circuits in Small µDFN Packages
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
BATTERY SUPPLY CURRENT
vs. SUPPLY VOLTAGE
2.00
VTH = 2.93V
1.75
www.DataSheet4U1..c50om
VBATT = 2.8V
1.25
1.00 VBATT = 2.5V
0.75 VBATT = 2.3V
0.50
0.25
0
-0.25
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
RESETIN THRESHOLD
vs. TEMPERATURE
1.250
MAX16036/
1.245 MAX16040
1.240
1.235
1.230
1.225
1.220
1.215
1.210
-40
-15 10 35 60
TEMPERATURE (°C)
85
RESETIN-TO-RESET PROPAGATION
DELAY vs. TEMPERATURE
3.0
MAX16036/
2.8 MAX16040
VOD = 50mV
2.5
2.3
2.0
1.8
1.5
1.3
1.0
-40
-15 10 35 60
TEMPERATURE (°C)
85
CEIN PROPAGATION DELAY
vs. CEOUT LOAD CAPACITANCE
3.0
2.5
2.0
VCC = 3V
1.5
1.0 VCC = 5V
0.5
0
0 25 50 75 100 125 150 175
CEOUT LOAD CAPACITANCE (pF)
CEIN TO CEOUT ON-RESISTANCE
vs. TEMPERATURE
35
30
25
20 VCC = 3V
15
10
VCC = 5V
5
0
-40
-15 10 35 60
TEMPERATURE (°C)
85
WATCHDOG TIMEOUT PERIOD
vs. TEMPERATURE
2.0
VCC = 5V
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
-40
-15 10 35 60
TEMPERATURE (°C)
85
PFI-TO-PFO DELAY
vs. TEMPERATURE
5.00
4.75 VOD = 30mV
4.50
4.25
4.00
3.75
3.50
3.25
3.00
2.75
2.50
2.25 FALLING EDGE
2.00
-40 -15 10 35 60 85
TEMPERATURE (°C)
1.250
1.245
1.240
1.235
1.230
1.225
1.220
1.215
1.210
-40
PFI THRESHOLD
vs. TEMPERATURE
-15 10 35 60
TEMPERATURE (°C)
85
6 _______________________________________________________________________________________
6 Page | |||
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部品番号 | 部品説明 | メーカ |
MAX1603 | Dual-Channel CardBus and PCMCIA VCC/VPP Power-Switching Networks | Maxim Integrated |
MAX16030 | Sequencing/Supervisory Circuits | Maxim Integrated Products |
MAX16033 | (MAX16033 - MAX16040) Low-Power Battery Backup Circuits | Maxim Integrated Products |
MAX16034 | (MAX16033 - MAX16040) Low-Power Battery Backup Circuits | Maxim Integrated Products |