DS1811-15/T&R [ROCHESTER]
1-CHANNEL POWER SUPPLY SUPPORT CKT, BCY3, TO-92, 3 PIN;
| 型号： | DS1811-15/T&R |
| 厂家： | 
Rochester Electronics |
| 描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, BCY3, TO-92, 3 PIN |
| 文件： | 总10页 (文件大小：1025K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DS1811
5V EconoReset with Open Drain Output
www.maxim-ic.com
FEATURES
PIN ASSIGNMENT
C Automatically restarts a microprocessor after
power failure
DALLAS
DS1811
Econo
C Maintains reset for 150 ms after VCC returns
to an in-tolerance condition
Reset
C Reduces need for discrete components
C Precision temperature-compensated voltage
reference and voltage sensor
1
2
TOP VIEW
SOT-23 PACKAGE
See Mech.
C Low-cost TO-92 or space saving SOT-23
packages available
Drawings Section
On Website
1 2 3
1 2 3
C Efficient open-drain output with internal
5.5 kꢀ pull-up resistor
C Operating temperature -40°C to +85°C
BOTTOM VIEW
TO-92 PACKAGE
See Mech.
Drawings Section
On Website
PIN DESCRIPTION
TO-92
1
2
3
RST
VCC
Active Low Reset Output
Power Supply
GND
Ground
SOT-23
1
2
3
RST
VCC
Active Low Reset Output
Power Supply
GND
Ground
DESCRIPTION
The DS1811 EconoReset uses a precision temperature reference and comparator circuit to monitor the
status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail
signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition,
the reset signal is kept in the active state for approximately 150 ms to allow the power supply and
processor to stabilize.
1 of 5
041002
DS1811
OPERATION - POWER MONITOR
The DS1811 provides the functions of detecting out-of-tolerance power supply conditions and warning a
processor-based system of impending power failure. When VCC is detected as out-of-tolerance, the RST
signal is asserted. On power-up, RST is kept active for approximately 150 ms after the power supply has
reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RST
is released.
BLOCK DIAGRAM (OPEN-DRAIN OUTPUT) Figure 1
APPLICATION EXAMPLE Figure 2
2 of 5
DS1811
TIMING DIAGRAM: POWER-UP Figure 3
TIMING DIAGRAM: POWER-DOWN Figure 4
3 of 5
DS1811
ABSOLUTE MAXIMUM RATINGS*
Voltage on VCC Pin Relative to Ground
-0.5V to +7.0V
Voltage on RST Relative to Ground
-0.5V to VCC +0.5V
Operating Temperature
-40°C to +85°C
Storage Temperature
-55°C to +125°C
260°C for 10 seconds
Soldering Temperature
* This is a stress rating only and functional operation of the device at these or any other conditions
above those indicated in the operation sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods of time may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
(-40LC to +85LC)
PARAMETER
SYMBOL MIN
VCC 0.0
TYP
MAX
5.5
UNITS NOTES
Supply Voltage
V
1
DC ELECTRICAL CHARACTERISTICS
(-40LC to +85LC; VCC=1.2V to 5.5V)
PARAMETER
SYMBOL MIN
TYP
MAX
UNITS NOTES
Output Current @ 0.4 volts
Operating Current VCC < 5.5 volts
VCC Trip Point (DS1811-5)
VCC Trip Point (DS1811-10)
VCC Trip Point (DS1811-15)
Internal Pull-Up Resistor
Output Capacitance
IOL
ICC
VCCTP
VCCTP
VCCTP
RP
+10
mA
ꢁA
V
V
V
2, 3
4
1
1
1
30
40
4.75
4.49
4.24
7.5
4.50
4.25
4.00
3.5
4.62
4.35
4.13
5.5
kꢀ
pF
COUT
10
AC ELECTRICAL CHARACTERISTICS
(-40LC to +85LC; VCC=1.2V to 5.5V)
PARAMETER
SYMBOL MIN
TYP
150
2
MAX
300
5
UNITS NOTES
RESET Active Time
tRST
tRPD
100
ms
ꢁs
VCC Detect to RST
VCC Slew Rate
(VCCTP (MAX) to VCCTP (MIN))
VCC Slew Rate
tF
300
0
ꢁs
tR
ns
(VCCTP (MIN) to VCCTP (MAX))
tRPU
100
150
300
ms
5
VCC Detect to RST
4 of 5
DS1811
NOTES:
1. All voltages are referenced to ground.
2. Measured with VCC O 2.7 volts.
3. A 1kꢀꢂexternal resistor may be required in some applications for proper operation of the
microprocessor reset control circuit.
4. Measured with RST output open.
5. tR = 5 ꢁs.
PART MARKING CODES
“A”, “B”, &“C” represent the device type.
810 . . . . DS1810
“D” represents the device tolerance.
A . . . . . . 5%
811 . . . . DS1811
B . . . . . . 10%
812 . . . . DS1812
C . . . . . . 15%
813 . . . . DS1813
D . . . . . . 20%
815 . . . . DS1815
816 . . . . DS1816
817 . . . . DS1817
818 . . . . DS1818
5 of 5
EN GL ISH • ? ? ? ? • ? ? ? • ? ? ?
C OM PA N Y M EM B ER S
WH AT ' S N EW PR ODUCTS SO LU TI ONS D E SI G N
AP P NOT ES SUPP ORT
BU Y
DS 1 81 1
Pa r t Nu mb e r T ab l e
N o te s:
1 . S ee t he DS1 811 Q uic kVie w D at a Sh ee t f or f urt her inf orm ati on o n th is p rodu ct f ami l y or d ow n lo a d th e DS181 1 ful l data s heet
( PD F, 128kB) .
2 . O th er o p ti on s a n d l in ks fo r p urch asi ng p arts a re l is te d at : h t tp : / /w w w. m a xi m -i c . co m /s al es .
3 . Did n' t F ind W ha t You Ne ed ? As k o u r ap p l ic at i o n s e n gi n ee r s . E x p er t as s is t a nc e i n fi ndi ng pa r ts , us ua lly wi th in one bus iness day.
4. Pa r t n u mb e r suf f ix e s: T o r T &R = ta p e a n d r e e l; + = Ro HS/le ad - fr e e ; # = Ro H S/lea d - e xe m p t. Mo r e : S e e fu ll da t a sh e et o r Par t
Nam ing Conve nti ons .
5 . * S ome p ackages hav e variations, listed on the drawing. " PkgCode/Variation" tells w hi ch vari at i on th e pro d uct u se s.
P ar t Num ber
N ot es F r ee
Sa mp le
B uy
D i re c t
T em p
R oHS/L ead- Fr ee?
Ma t e ri a l s A n a ly s is
P
a
c
k
a
g
e
:
T
Y
P
E
P
I
N
S
S
I
Z
E
D R A WI N G C O D E / VA R *
DS 1 811R -5/T& R/C03
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U se pkgc ode /va r ia tion: U 3- 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
D S18 1 1R- 1 0/T & R/C 0 1
D S1 8 1 1R -1 5 + T &R
D S1 81 1R -1 0+T & R
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U se pkgc ode /va r ia tion: U 3- 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
5 V -
1 5%
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U s e p k g c o d e/v a r ia tio n : U 3 + 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
5 V -
1 0%
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U s e p k g c o d e/v a r ia tio n : U 3 + 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
D S1 8 1 1 R-1 0 - U +
DS 1 81 1 R -1 5 - U
DS 1 81 1 R -1 0 - U
D S18 11 R- 5-U
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U s e p k g c o d e/v a r ia tio n : U 3 + 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
5 V -
1 5%
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U se pkgc ode /va r ia tion: U 3- 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
5 V -
1 0%
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U se pkgc ode /va r ia tion: U 3- 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
5V- 5%
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U se pkgc ode /va r ia tion: U 3- 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
D S1811R- 15/T &R
D S1811R- 10/T &R
DS 18 1 1 R -5 / T &R
D S1 8 1 1 R-1 5 - U +
DS 1 81 1R-5 -U+
D S1 8 1 1R -5 + T & R
D S 181 1- 5+ T& R
5 V -
1 5%
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U se pkgc ode /va r ia tion: U 3- 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
5 V -
1 0%
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U se pkgc ode /va r ia tion: U 3- 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
5V- 5%
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U se pkgc ode /va r ia tion: U 3- 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U s e p k g c o d e/v a r ia tio n : U 3 + 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U s e p k g c o d e/v a r ia tio n : U 3 + 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
5V- 5%
5V- 5%
SOT23;3 pin;50
Dwg : 2 1 - 0 0 5 1 G (P D F )
U s e p k g c o d e/v a r ia tio n : U 3 + 4 *
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 3 A (P D F )
Use pkgc ode/ varia tion : Q3+4*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
D S1 8 1 1- 1 5 +T & R
D S 1 8 1 1 - 1 5 +
D S1 8 1 1- 1 0 +T & R
DS 18 1 1 -1 5 / T& R
DS 18 1 1 -1 0 / T& R
DS 18 11-5 /T& R
D S 1 8 1 1 - 1 5
5 V -
1 5%
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 3 A (P D F )
Use pkgc ode/ varia tion : Q3+4*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 1 A (P D F )
Use pkgc ode/ varia tion : Q3+1*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
5 V -
1 0%
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 3 A (P D F )
Use pkgc ode/ varia tion : Q3+4*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
5 V -
1 5%
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 3 A (P D F )
Us e pk gcod e/v aria tio n: Q3- 4*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
5 V -
1 0%
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 3 A (P D F )
Us e pk gcod e/v aria tio n: Q3- 4*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
5V- 5%
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 3 A (P D F )
Us e pk gcod e/v aria tio n: Q3- 4*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
5 V -
1 5%
M o n i t or
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 1 A (P D F )
Us e pk gcod e/v aria tio n: Q3- 1*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
D S 1 8 1 1 - 1 0
5 V -
1 0%
M o n i t or
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 1 A (P D F )
Us e pk gcod e/v aria tio n: Q3- 1*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
D
S
1
8
1
1
-
5
5V- 5%
M o n i t or
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 1 A (P D F )
Us e pk gcod e/v aria tio n: Q3- 1*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: N o
Ma t e ri a l s A n a ly s is
D S 1 8 1 1 - 1 0 +
D S 1 8 1 1 - 5 +
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 1 A (P D F )
Use pkgc ode/ varia tion : Q3+1*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
TO9 2;3 pi n;18 5
Dwg : 5 6 - G 0 0 0 6 - 0 0 1 A (P D F )
Use pkgc ode/ varia tion : Q3+1*
- 4 0 C t o + 8 5 C Ro H S / Le a d -F re e: Yes
Ma t e ri a l s A n a ly s is
Di dn ' t F ind W ha t You Ne e d ?
CO NT ACT U S: SE ND US AN EMAI L
Co p y rig h t 2 00 7 b y M a x im I n te g r a te d Pr o d u c ts , D a lla s S em i co n d u c to r • Le ga l N ot i ce s • P ri va c y P o l ic y
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