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MAX16016 데이터시트 PDF




Maxim Integrated Products에서 제조한 전자 부품 MAX16016은 전자 산업 및 응용 분야에서
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부품번호 MAX16016 기능
기능 (MAX160xx) Low-Power uP Supervisory Circuits
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MAX16016 데이터시트, 핀배열, 회로
19-4145; Rev 2; 10/08
www.DataSheet4U.com
Low-Power µP Supervisory Circuits with
Battery-Backup Circuit and Chip-Enable Gating
General Description
The MAX16016/MAX16020/MAX16021 supervisory cir-
cuits monitor power supplies, provide battery-backup
control, and chip-enable (CE) gating to write protect
memory in microprocessor (µP)-based systems. These
low-power devices improve system reliability by providing
several supervisory functions in a small, single integrated
solution.
The MAX16016/MAX16020/MAX16021 perform four
basic system functions:
1) Provide a µP reset output during VCC supply power-
up, power-down, and brownout conditions.
2) Control VCC to battery-backup switching internally
to maintain data or low-power operation for memo-
ries, real-time clocks (RTCs), and other digital logic
when the main power is removed.
3) Provide memory write protection through internal
chip-enable gating during brownout.
4) Provide a combination of additional supervisory
functions listed in the Features section.
The MAX16016/MAX16020/MAX16021 operate from a
1.53V to 5.5V supply voltage and offer fixed reset
thresholds for monitoring 5V, 3.3V, 3V, 2.5V, and 1.8V
systems. Each device is available with either a push-
pull or open-drain reset output.
The MAX16016/MAX16020/MAX16021 are available in
small TDFN/TQFN packages and are fully specified for
an operating temperature range of -40°C to +85°C.
Applications
Main/Backup Power for RTCs, CMOS Memories
Industrial Control
GPS Systems
Set-Top Boxes
Point-of-Sale Equipment
Portable/Battery Equipment
Features
o System Monitoring for 5V, 3.3V, 3V, 2.5V, or 1.8V
Power-Supply Voltages
o 1.53V to 5.5V Operating Voltage Range
o Low 1.2µA Supply Current (0.25µA in Battery-
Backup Mode)
o 145ms (min) Reset Timeout Period
o Battery Freshness Seal
o On-Board Gating of CE Signals, 1.5ns
Propagation Delay (MAX16020/MAX16021)
o Debounced Manual Reset Input
o Watchdog Timer, 1.2s (typ) Timeout
o Power-Fail Comparator and Low-Line Indicator for
Monitoring Voltages Down to 0.6V
o Battery-On, Battery-OK, and Battery Test
Indicators
o Small 10-Pin TDFN or 16-Pin TQFN Packages
o UL®-Certified to Conform to IEC60950-1
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX16016_TB_+T
-40°C to +85°C
10 TDFN-EP*
The first placeholder “_” designates all output options. Letter
“L” indicates push-pull outputs and letter “P” indicates open-
drain outputs. The last placeholder “_” designates the reset
threshold (see Table 1).
T = Tape and reel.
+Denotes a lead-free/RoHS-compliant package.
*EP = Exposed pad.
Ordering Information continued at end of data sheet.
Selector Guide located at end of data sheet.
Pin Configurations
TOP VIEW
16 15 14 13
BATT 1 +
12 RESET
MR 2
PFI 3
WDI 4
5
MAX16020
11 GND
10 PFO
*EP
9 WDO
678
UL is a registered trademark of Underwriters Laboratories, Inc.
*EP = EXPOSED PAD.
TQFN
Pin Configurations continued at end of data sheet.
________________________________________________________________ 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.




MAX16016 pdf, 반도체, 판매, 대치품
www.DataSheet4U.com
Low-Power µP Supervisory Circuits with
Battery-Backup Circuit and Chip-Enable Gating
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 1.53V to 5.5V, VBATT = 3V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
WATCHDOG TIMER (WDI, WDO)
Watchdog Timeout Period
Minimum WDI Input Pulse Width
SYMBOL
tWD
tWDI
WDI Input Low Voltage
VIL (Note 6)
CONDITIONS
WDI Input High Voltage
WDI Input Current (Note 7)
WDO Output Low Voltage
VIH (Note 6)
VWDI = 0 or 5.5V, time average
VOL
VCC = 1.1 x VTH, ISINK = 1mA, WDO
asserted
MIN TYP MAX UNITS
0.83
320
0.7 x
VCC
-1
1.235
1.64
0.3 x
VCC
+1
0.3
s
ns
V
V
µA
V
WDO Output High Voltage
(Push-Pull Output)
VOH
VCC = 1.1 x VTH, ISOURCE = 100µA, WDO
deasserted
VOUT
- 0.3
V
WDO Leakage Current
(Open-Drain Output)
VWDO = 5.5V, WDO deasserted
1 µA
BATTERY-ON INDICATOR (BATTON)
Output Low Voltage
VOL
BATTON Leakage Current
BATTON Output High Voltage
VOH
ISINK = 3.2mA, VBATT = 2.1V
VBATTON = 5.5V
VCC = 0.9 x VTH, ISOURCE = 100µA,
BATTON asserted
VOUT
- 0.3
0.3 V
1 µA
V
Output Short-Circuit Current
(Note 4)
CE GATING (CEIN, CEOUT)
CEIN Leakage Current
CEIN to CEOUT Resistance
CEOUT Short-Circuit Current
CEIN to CEOUT Propagation
Delay
Sink current, VCC = 5V
60 mA
Reset asserted, VCC = 0.9 x VTH or 0V
Reset not asserted (Note 5)
Reset asserted, CEOUT = 0,
VCC = 0.9 x VTH
-1 +1 µA
8 50
0.75 2 mA
50source, CLOAD = 50pF, VCC = 4.75V
1.5 7 ns
Output High Voltage
Reset to CEOUT Delay
VCC = 5V, VCC VBATT, ISOURCE = 100µA
VCC = 0V, VBATT 2.2V ISOURCE = 1µA
0.8 x
VCC
VBATT -
0.1
12
V
µs
4 _______________________________________________________________________________________

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MAX16016 전자부품, 판매, 대치품
www.DataSheet4U.com
Low-Power µP Supervisory Circuits with
Battery-Backup Circuit and Chip-Enable Gating
Typical Operating Characteristics (continued)
(VCC = 5V, VBATT = 0V, TA = +25°C, unless otherwise noted.)
VCC TO OUT ON-RESISTANCE
vs. TEMPERATURE
5
VCC = +3.15V, IOUT = 65mA
4
BATT TO OUT ON-RESISTANCE
vs. TEMPERATURE (VCC = 0V, IOUT = 20mA)
5
VBATT = 2.5V
4 VBATT = 3V
RESET OUTPUT VOLTAGE LOW
vs. SINK CURRENT
0.5
0.4
3
2
1
0
-40
-15 10 35 60
TEMPERATURE (°C)
85
NORMALIZED RESET THRESHOLD
vs. TEMPERATURE
1.005
1.004
1.003
1.002
1.001
1.000
0.999
0.998
0.997
0.996
0.996
-40
-15 10 35 60
TEMPERATURE (°C)
85
WATCHDOG TIMEOUT PERIOD
vs. TEMPERATURE
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
-40
-15 10 35 60
TEMPERATURE (°C)
85
3
2
1
VBATT = 4.5V
0
-40
-15 10 35 60
TEMPERATURE (°C)
85
MAXIMUM TRANSIENT DURATION
vs. RESET THRESHOLD OVERDRIVE
500
MAX16020PTEZ+
450
400
350
300
250
RESET OCCURS ABOVE THE CURVE
200
150
100
50
0
0 50 100 150 200 250 300 350 400
RESET THRESHOLD OVERDRIVE (mV)
0.65
0.64
0.63
0.62
0.61
0.60
0.59
0.58
0.57
0.56
0.55
-40
PFI THRESHOLD
vs. TEMPERATURE
VPFI+
VPFI-
-15 10 35 60
TEMPERATURE (°C)
85
0.3
VCC = 3.3V
0.2
VCC = 5V
0.1
0
0 2 4 6 8 10 12 14 16 18 20
SINK CURRENT (mA)
RESET TIMEOUT PERIOD
vs. TEMPERATURE
210
MAX16020PTEZ+
208
206
204
202
200
198
196
194
192
190
-40
-15 10 35 60
TEMPERATURE (°C)
NORMALIZED LL THRESHOLD
vs. TEMPERATURE
1.005
1.004
1.003
1.002
1.001
1.000
0.999
0.998
0.997
0.996
0.995
-40
-15 10 35 60
TEMPERATURE (°C)
85
85
_______________________________________________________________________________________ 7

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