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CS8126-1YT5 데이터시트 PDF




Cherry Semiconductor Corporation에서 제조한 전자 부품 CS8126-1YT5은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 CS8126-1YT5 자료 제공

부품번호 CS8126-1YT5 기능
기능 5V/ 750mA Low Dropout Linear Regulator with Delayed RESET
제조업체 Cherry Semiconductor Corporation
로고 Cherry Semiconductor Corporation 로고


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CS8126-1YT5 데이터시트, 핀배열, 회로
CS8126,-1,-2
5V, 750mA Low Dropout Linear Regulator
with Delayed RESET
Description
Features
The CS8126 is a low dropout, high cur-
rent 5V linear regulator. It is an
improved replacement for the CS8156.
Improvements include higher accuracy,
tighter saturation control, better supply
rejection, and enhanced RESET circuit-
ry. Familiar PNP regulator features
such as reverse battery protection, over-
voltage shutdown, thermal shutdown,
and current limit make the CS8126 suit-
able for use in automotive and battery
operated equipment. Additional on-
chip filtering has been included to
enhance rejection of high frequency
transients on all external leads.
An active microprocessor RESET func-
tion is included on-chip with externally
programmable delay time. During
power-up, or after detection of any
error in the regulated output,
the RESET lead will remain in the low
state for the duration of the delay.
Types of errors include short circuit,
low input voltage, overvoltage shut-
down, thermal shutdown, or others that
cause the output to become unregulat-
ed. This function is independent of the
input voltage and will function correct-
ly with an output voltage as low as 1V.
Hysteresis is included in both the reset
and Delay comparators for enhanced
noise immunity. A latching discharge
circuit is used to discharge the Delay
capacitor, even when triggered by a rel-
atively short fault condition. This circuit
improves upon the commonly used
SCR structure by providing full capaci-
tor discharge (0.2V type).
Note:The CS8126 is lead compatible
with the LM2925, TLE4260, L4947,
LM2927, and LM2926.
Block Diagram
Over Voltage
Shutdown
Pre-
Regulator
Regulated Supply
for Circuit Bias
Bandgap
Reference
Charge
Current
Generator
Thermal
Shutdown
Error
Amp
Anti-Saturation
and
Current Limit
VIN
VOUT
s Low Dropout Voltage
(0.6V at 0.5A)
s 3% Output Accuracy
s Active RESET
s External RESET Delay
for Reset
s Protection Circuitry
Reverse Battery
Protection
+60V, -50V Peak
Transient Voltage
Short Circuit Protection
Internal Thermal
Overload Protection
Package Options
16 Lead SOIC Wide
VIN 1
NC
VOUT
NC
NC VOUT(SENSE)
NC NC
NC
ÐRÐEÐSÐEÐTÐ
NC
NC
Gnd
NC
Delay
NC
7 L D2PAK
Tab (Gnd)
5 L TO-220
Tab (Gnd)
Delay
Gnd
Latching
Discharge
QS
R
-
+
Reset
Comparator
VDischarge
Delay
+ Comparator
-
RESET
1
1 VIN
2 VOUT
3 VOUT(SENSE)
4 Gnd
5 Delay
6 RESET
7 NC
1
CS8126-1
1 VIN
2 VOUT
3 Gnd
4 Delay
5 RESET
CS8126-2
1 VIN
2 RESET
3 Gnd
4 Delay
5 VOUT
Rev. 5/4/99
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Web Site: www.cherry-semi.com
1 A ¨ Company




CS8126-1YT5 pdf, 반도체, 판매, 대치품
Typical Performance Characteristics: continued
Line Regulation vs. Output Current over Temperature
Load Regulation vs. Output Current over Temperature
100
80 VIN 6-26V
60
40
TEMP = 25ûC
20
0 TEMP = 40ûC
-20
-40
TEMP = 125ûC
-60
-80
-100
0 100 200 300 400 500 600 700 800
Output Current (mA)
6
4
2
0
-2
-4
-6
-8
-10
-12
-14
0
TEMP = -40ûC
TEMP = 25ûC
VIN = 14V
TEMP = 125ûC
100 200 300 400 500 600 700 800
Output Current (mA)
Dropout Voltage vs. Output Current over Temperature
Quiescent Current vs. Output Current over Temperature
900
800
700
600
500
400
300
200
100
0
0
125ûC
-40ûC
25ûC
100 200 300 400 500 600 700 800
Output Current (mA)
100
90
80
70
60
50
40
30
20
10
0
0
VIN = 14V
125ûC
25ûC
-40ûC
100 200 300 400 500 600 700 800
Output Current (mA)
Ripple Rejection
IOUT= 250mA
90
80
COUT= 10mF, ESR = 1 & 0.1mF,
70 ESR = 0
60
50
40
COUT= 10mF, ESR = 1W
30
20
COUT= 10mF, ESR = 10W
10
0
100 101 102 103 104 105 106 107 108
Freq. (Hz)
103
102
101
100
10-1
10-2
10-3
10-4
100
Output Capacitor ESR
COUT= 47/68mF
Stable Region
COUT= 47mF
COUT= 68mF
101 102
Output Current (mA)
103
4

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CS8126-1YT5 전자부품, 판매, 대치품
Application Notes: continued
Once the value of PD(max) is known, the maximum permis-
sible value of RQJA can be calculated:
RQJA =
150¡C - TA
PD
(2)
The value of RQJA can then be compared with those in
the package section of the data sheet. Those packages with
RQJA's less than the calculated value in equation 2 will keep
the die temperature below 150¡C.
In some cases, none of the packages will be sufficient to
dissipate the heat generated by the IC, and an external
heatsink will be required.
IIN
VIN
Smart
Regulator
}Control
Features
IOUT
VOUT
Heat Sinks
A heat sink effectively increases the surface area of the
package to improve the flow of heat away from the IC and
into the surrounding air.
Each material in the heat flow path between the IC and the
outside environment will have a thermal resistance. Like
series electrical resistances, these resistances are summed
to determine the value of RQJA.
RQJA = RQJC + RQCS + RQSA
where:
RQJC = the junctionÐtoÐcase thermal resistance,
(3)
RQCS = the caseÐtoÐheatsink thermal resistance, and
RQSA = the heatsinkÐtoÐambient thermal resistance.
RQJC appears in the package section of the data sheet. Like
RQJA, it is a function of package type. RQCS and RQSA are
functions of the package type, heatsink and the interface
between them. These values appear in heat sink data
sheets of heat sink manufacturers.
IQ
Figure 1. Single output regulator with key performance parameters
labeled.
7

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CS8126-1YT5

5V/ 750mA Low Dropout Linear Regulator with Delayed RESET

Cherry Semiconductor Corporation
Cherry Semiconductor Corporation
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5V/ 750mA Low Dropout Linear Regulator with Delayed RESET

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