EM6354XSC4B-4.6 概述
Reset Circuit with Adjustable Delay 复位电路,延时可调 电源管理电路
EM6354XSC4B-4.6 规格参数
生命周期: | Contact Manufacturer | 包装说明: | , |
Reach Compliance Code: | unknown | 风险等级: | 5.72 |
Base Number Matches: | 1 |
EM6354XSC4B-4.6 数据手册
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EM6354
Reset Circuit with Adjustable Delay
Description
Features
!
Adjustable reset timeout period using an external
capacitor
Ultra-low supply current of 2.9µA (VDD=3.3V)
Operating temperature range: -40°C to +125°C
±1.5% reset threshold accuracy
11 reset threshold voltages VTH: 4.63V, 4.4V, 3.08V,
2.93V, 2.63V, 2.2V, 1.8V, 1.66V, 1.57V, 1.38V, 1.31V
3 reset output options:
The EM6354 is an ultra-low current reset circuit available in a
large variety of configurations and very small packages for
maximum flexibility in all end-applications up to 125°C and
using power supplies between 1.5V and 5.5V.
This circuit monitors the supply voltage of any electronic
system, and generates the appropriate reset signal. The
threshold defines the minimum allowed voltage which
guarantees the good functionality of the system. When VDD
rises above VTH, the output remains active for an additional
delay time. This allows the system to stabilize before going
fully active. This delay time, or reset timeout period, can be
adjusted using an external capacitor.
The output is guaranteed to be in the correct state for VDD
down to 0.8V. There are 11 reset threshold voltages starting
as low as 1.31V and up to 4.63V. The EM6354 features
three output types: active-low push-pull, active-low open-
drain and active-high push-pull.
Small SC70 and SOT23 packages as well as ultra-low
supply current of 2.9µA make the EM6354 an ideal choice
for portable and battery-operated devices.
!
!
!
!
!
Active-low RESET push-pull
Active-low RESET open-drain
Active-high RESET push-pull
!
!
!
!
Immune to short negative VDD transients
Guaranteed Reset valid down to 0.8V
Threshold hysteresis: 2.1% of VTH
Very small SOT23-5L and SC70-4L (SC-82AB)
packages
Applications
Typical Application
!
!
!
!
!
!
!
!
Home appliances
VDD
Modems
VDD
*
VDD
Routers, hubs and gateways
WAN, LAN
RESET
RESET
Handheld GPS
MPU, DSP
EM6354
CD
Metering and Instrumentation
TV sets
GND
GND
Automotive systems
GND
*
REXT for open-drain version only
Block Diagram
VDD
Pin Configuration (top view)
Voltage
Reference
-
RESET
RESET
1
2
3
5
CD
RESET
(RESET)
Delay
(RESET)
1
2
4
3
GND
CD
Circuit
VDD
(RESET)
+
VDD
4
NC
GND
SOT23-5L
SC70-4L (SC-82AB)
CD
GND
Pin Description
Pin
Name
Function
SOT23-5L
SC70-4L
Active-low RESET output. RESET remains low for the reset timeout period after all reset
conditions are deasserted and then goes high.
Active-high RESET output. RESET remains high for the reset timeout period after all reset
conditions are deasserted and then goes low.
RESET
RESET
1
1
2
3
4
2
4
-
VDD
GND
N.C.
Supply Voltage (5.5V max.)
Ground
Not connected. Not internally connected
Connect a capacitor between CD and GND to set the timeout period
(CD min=1nF; C D max=10000nF). Reset Timeout Period in [ms] is equal to CD in [nF]
5
3
CD
1
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Copyright © 2006, EM Microelectronic-Marin SA
03/06 – rev.I
EM6354
Ordering Information
EM6354 X SP5B - 2.9 +
Reset Output Type:
RoHS Compliance:
X = Active-low /RES push-pull
Y = Active-low /RES open-drain
Z = Active-high RES push-pull
+ = lead-free/green mold compliant
[blank] = leaded
Reset Threshold Voltage (VTH):
1.3 = 1.31V
1.4 = 1.38V
1.6 = 1.57V
1.7 = 1.66V
1.8 = 1.80V
2.2 = 2.20V
2.6 = 2.63V
2.9 = 2.93V
3.1 = 3.08V
4.4 = 4.40V
4.6 = 4.63V
Package:
SP5B = SOT23-5, Tape&Reel 3000 pcs
SC4B = SC70-4, Tape&Reel 3000 pcs
Note: subject to availability (see standard versions list below). Please give complete Part Number when ordering.
Standard Versions (Top Marking)
Top
Top Marking 2)
with 4
Top
Top Marking 2)
with 4
Marking1)
Marking1)
Part Number
Part Number
Characters
Characters
EM6354XSP5B-1.3
EM6354XSP5B-1.8
EM6354XSP5B-1.8+
EM6354XSP5B-2.6
EM6354XSP5B-2.9
EM6354XSP5B-2.9+
EM6354XSP5B-4.6
EM6354XSC4B-1.3
EM6354XSC4B-1.8
EM6354XSC4B-2.6
EM6354XSC4B-2.6+
EM6354XSC4B-2.9
EM6354XSC4B-4.6
EM6354XSC4B-4.6+
EM6354YSP5B-2.6
EM6354YSP5B-4.4
AMAA
AMAE
BMAE
AMAG
AMAH
BMAH
AMAL
AMAA
AMAE
AMAG
BMAG
AMAH
AMAL
BMAL
AMAT
AMAW
EM6354YSP5B-4.6
EM6354YSP5B-4.6+
EM6354XSP5B-1.3
EM6354XSP5B-1.8
EM6354XSP5B-2.6
EM6354XSP5B-2.9
AMAX
BMAX
AMAA
AMAE
AMAG
AMAH
K1##
KC##
KA##
K4##
KB##
1)
2)
Top marking is the standard from 2006. No bottom marking exists. Where ## refers to the lot number (EM internal
reference only)
Top marking with 4 characters is standard from 2003. For lead-free/green mold (RoHS) parts, the first letter of top
marking with 4 characters begins with letter “B” instead of letter “A”. Bottom marking indicates the lot number.
Standard Versions (samples)
Part Number
Part Number
EM6354XSC4B-2.6+
EM6354XSC4B-4.6
EM6354XSP5B-2.9+
EM6354YSP5B-4.6+
Sample stock is generally held on standard versions only. Non standard versions have a 30,000 pieces minimum order
quantity. Please contact factory for other versions not shown here and for availability of non standard versions.
2
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Copyright
03/06 – rev.I
© 2006, EM Microelectronic-Marin SA
EM6354
Absolute Maximum Ratings
Parameter
Voltage at VDD to GND
Minimum voltage at any signal
pin
Maximum voltage at any signal
pin
Electrostatic discharge max. to
MIL-STD-883C method 3015.7
with ref. to VSS
Handling Procedures
Symbol
VDD
Conditions
-0.3V to +6V
This device has built-in protection against high static
voltages or electric fields; however, anti-static precautions
must be taken as for any other CMOS component. Unless
otherwise specified, proper operation can only occur when
all terminal voltages are kept within the voltage range.
Unused inputs must always be tied to a defined logic
voltage level.
VMIN
GND - 0.3V
VDD + 0.3V
VMAX
VESD
TMAX
2000V
Operating Conditions
Max. soldering conditions
Storage Temperature Range
250°C x 10s
Parameter
Supply voltage (note 1)
Operating Temperature
Symbol Min Max Unit
TSTG -65°C to +150°C
VDD
TA
0.8 5.5
-40 +125 °C
V
Stresses above these listed maximum ratings may cause
permanent damages to the device. Exposure beyond
specified operating conditions may affect device reliability
or cause malfunction.
Electrical Characteristics
Unless otherwise specified: VDD= 0.8V to 5.5V, TA=+25°C (note 1).
Parameter
Symbol
Conditions
Min
-
Typ
Max
4.6
Unit
+25°C
VDD=1.5V
VDD=3.3V
2.3
-40°C to +125°C
+25°C
-
7
-
5.5
Supply current (note 2)
IDD
2.9
3.4
µ
A
-40°C to +125°C
+25°C
-
8.3
-
6.3
V
DD=5.0V
-40°C to +125°C
-
9.6
EM6354 – 1.3
1.290
1.359
1.546
1.635
1.773
2.167
2.591
2.886
3.034
4.334
4.561
1.31
1.38
1.57
1.66
1.80
2.20
2.63
2.93
3.08
4.40
4.63
1.330
1.401
1.594
1.685
1.827
2.233
2.669
2.974
3.126
4.466
4.699
EM6354 – 1.4
EM6354 – 1.6
EM6354 – 1.7
EM6354 – 1.8
EM6354 – 2.2
EM6354 – 2.6
EM6354 – 2.9
EM6354 – 3.1
EM6354 – 4.4
EM6354 – 4.6
Threshold voltage
(note 3)
VTH
V
Threshold voltage
temperature coefficient
(note 4)
∆VTH
∆TA
TA = -40°C to +125°C
-
-
-
-
ppm/°C
V
±
50
Threshold hysteresis
VHYS
2.1% VTH
•
Note 1: Production tested at +25°C only. Over temperature limits are guaranteed by design, not production tested.
VDD min=0.9V for active-high versions (EM6354Z).
Note 2: RESET (RESET) open.
Note 3: Threshold voltage is specified for VDD falling.
Note 4: Typical variation ∆VTH of VTH at a given temperature TA is calculated as follows:
∆VTH
∆TA
∆VTH(T = TA ) =
× VTH × TA − 25°C
Example:
for version VTH=2.93V, variation at TA=70°C is equal to ∆VTH(70°C)=±50
10-6 x 2.93 x (70-25)=±6.59mV
•
3
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Copyright
03/06 – rev.I
© 2006, EM Microelectronic-Marin SA
EM6354
Electrical Characteristics (continued)
Unless otherwise specified: VDD= 0.8V to 5.5V, TA=+25° C (note 1).
Parameter
Symbol
Conditions
Min Typ Max Unit
CD=100nF (measured value, note 5)
Reset timeout period
tPOR
V
DD from 0V to VTH (typ)+15% (note 2)
EM6354-4.6 version
DD drops from VTH (typ)+0.2V to VTH (typ)-0.2V
72
2
100 122
130 255
ms
Propagation delay time
V
tP
µ
s
(note 2)
V
DD to RESET (RESET) delay
V
V
V
V
V
DD>1V
-
-
-
-
-
-
-
-
-
-
-
-
0.3
0.3
0.3
0.3
0.3
0.3
-
IOL=100µA
IOL=1.5mA
IOL=3mA
Open-drain RESET output
Voltage
-40°C to +125°C
VOL
V
DD>2.5V
DD>5V
-
DD>1V
-
IOL=100µA
IOL=1.5mA
IOL=3mA
-40°C to +125°C
-40°C to +125°C
VOL
DD>2.5V
-
VDD>5V
VDD>1V
-
Push-pull RESET / RESET
Output voltage
V
0.8
2
4
-
IOH=-30µA
IOH=-1.5mA
IOH=-3mA
VOH
V
V
DD>2.5V
DD>5V
-
-
Output leakage current
ILEAK
-40°C to +125°C, only for EM6354Y (open-drain)
0.5
µ
A
Note 1: Production tested at +25°C only. Over temperature limits are guaranteed by design, not production tested.
VDD min=0.9V for active-high version (EM6354Z).
Note 2: RESET (RESET) open.
Note 5: tPOR is programmable by varying the value of the external capacitor connected to pin CD. The relation is tPOR (ms) =
CD (nF). The tolerance of the capacitor should be taken into account.
Timing Waveforms
tSEN
VDD
VTH
Overdrive
VHYS
0.8V
t
logic "1"
logic "0"
tPOR
tP
RESET
t
logic "1"
logic "0"
RESET
t
Note 6: tSEN = Maximum Transient Duration. Please refer to figure on the next page.
Note 7: Overdrive = VTH -VDD. Please refer to figure on the next page.
4
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Copyright
03/06 – rev.I
© 2006, EM Microelectronic-Marin SA
EM6354
Typical Reset Timeout Period
The Reset Timeout Period (tPOR) is programmable using an external capacitor connected to pin CD of EM6354. A ceramic
chip capacitor rated at or above 10V is sufficient. The Reset Timeout Period (tPOR) can be calculated using the following
formula for VTH =4.63V (EM6354-4.6):
tPOR (ms) = CD (nF).
For example a CD of 100nF will achieve a tPOR of 100 ms. The tolerance of the capacitor should be taken into account. If no
delay due to tPOR is needed in a certain application, the circuit EM6352 should be used instead.
For threshold voltage between VTH=4.63V and VTH=1.31V , the following graphic applies :
130
120
[ ms ]
110
100
1.31
2.93
VTH
4.63
Typical Reset Timeout Period tPOR vs. VTH for CD=100nF at TA=+25°C
[ms]
10000
VTH= 1.31 V
1000
100
10
VTH= 4.63 V
1
1
10
100
1000
10000
[nF]
Reset Timeout Period tPOR vs. Capacitor CD at TA=+25°C
5
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Copyright
03/06 – rev.I
© 2006, EM Microelectronic-Marin SA
EM6354
Typical Operating Characteristics
(Typical values are at TA=+25°C unless otherwise noted, RESET or RESET open.)
200%
175%
150%
125%
100%
75%
200%
175%
150%
125%
100%
75%
tPOR (°C)
tPOR (25°C)
tP (°C)
tP (25°C)
50%
50%
25%
25%
0%
0%
-50 -25
0
25 50 75 100 125
[°C]
-50 -25
0
25 50 75 100 125
[°C]
Reset Timeout Period tPOR vs. Temperature
(normalized with respect to tPOR 25°C
Propagation Time tP vs. Temperature
(normalized with respect to tP 25°C)
)
7
400
350
300
250
VDD 3 . 3 V
6
5
4
3
2
1
0
VDD 5 . 0 V
[ us ]
[ uA ]
Reset occurs
above this line
200
150
100
50
VDD 1. 5 V
0
-50 -25
0
25
50
[ °C ]
75 100 125
1
10
100
1000
[ mV ]
IDD vs. Temperature
Maximum Transient Duration tSEN
vs. Overdrive VTH-VDD
8%
6%
4%
2%
0%
-2%
-4%
-6%
-8%
[°C]
-50
-25
0
25
50
75
100
125
Threshold Voltage Variation vs. Temperature (normalized)
6
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Copyright
03/06 – rev.I
© 2006, EM Microelectronic-Marin SA
EM6354
Package Information
SOT23-5L
D
E1
E
C
A2 A
A1
L
b
e
SYMBOL MIN TYP MAX
A
0.90 1.30 1.45
0.05 0.08 0.15
0.90 1.15 1.30
A1
A2
b
0.35
0.08
0.50
0.20
C
D
E
2.80 2.90 3.00
2.60 2.80 3.00
E1
e
e1
L
1.50
1.75
0.95
1.90
0.45
e1
Dimensions are in mm
SYMBOL
MIN
MAX
SC70-4L
D
e
e1
D
0.65 BSC
0.5 BSC
1.80
e
e
L
2.20
0.30
0.70
1.35
2.40
0.40
1.00
0.10
1.10
0.18
0.30
b
0.15
0.575
1.15
1.80
0.10
0.80
0.00
0.80
0.10
0.10
b1
E
HE
E
HE
Q1
A2
A1
A
PIN 1
e1
Q1
b
b1
c
c
NOTE:
" All dimensions are in millimeters
" Dimensions are inclusive of plating
L
A2
A
" Dimensions are exclusive of mold flash & metal burr
" All specifications comply to EIAJ SC70
" Even though the width of pin 2 on SC70-4L is slightly larger than on so-
called 4-pin SC-82AB, the footprint of SC70-4L package is compatible
with the footprint of SC-82AB package from other suppliers, and thus
suitable for pin-to-pin replacement. Please check footprint on PCB.
A1
Traceability for small packages
Due to the limited space on the package surface, the bottom marking contains a limited number of characters that provide only partial
information for lot traceability. Full information for complete traceability is however provided on the packing labels of the product at delivery
from EM. It is highly recommended that the customer insures full lot traceability of EM product in his final product.
EM Microelectronic-Marin SA (EM) makes no warranty for the use of its products, other than those expressly contained in the Company's
standard warranty which is detailed in EM's General Terms of Sale located on the Company's web site. EM assumes no responsibility for
any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without
notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual
property of EM are granted in connection with the sale of EM products, expressly or by implications. EM's products are not authorized for
use as components in life support devices or systems.
Product qualification is performed according to internal EM quality standards for industrial products. For any special requirement (eg. automotive grade) please
contact EM Microelectronic-Marin S.A.
7
www.emmicroelectronic.com
Copyright
03/06 – rev.I
© 2006, EM Microelectronic-Marin SA
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