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CS8122YTHA5 데이터시트 PDF




Cherry Semiconductor Corporation에서 제조한 전자 부품 CS8122YTHA5은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 CS8122YTHA5 기능
기능 2% 5V/ 750mA Low Dropout Linear Regulator with Delayed RESET
제조업체 Cherry Semiconductor Corporation
로고 Cherry Semiconductor Corporation 로고


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CS8122YTHA5 데이터시트, 핀배열, 회로
CS8122
2% 5V, 750mA Low Dropout Linear
Regulator with Delayed RESET
Description
The CS8122 is a precision 5V linear reg-
ulator capable of sourcing in excess of
750mA. The RESETÕs delay time is
externally programmed using a discrete
RC network. During power up, or when
the output goes out of regulation, the
RESET lead remains in the low state
for the duration of the delay. This func-
tion is independent of the input voltage
and will function correctly as long as
the output voltage remains at or above
1V. Hysteresis is included in the Delay
and the RESET comparators to
improve noise immunity. A latching
discharge circuit is used to discharge
the delay capacitor when it is triggered
by a brief fault condition.
The regulator is protected against a
variety of fault conditions: i.e. reverse
battery, overvoltage, short circuit and
thermal runaway conditions. The regu-
lator is protected against voltage tran-
sients ranging from -50V to +40V. Short
circuit current is limited to 1.2A (typ).
The CS8122 is an improved replacement
for the CS8126 and features a tighter tol-
erance on its output voltage (2% vs 4%).
The CS8122 is packaged in a 5 lead
TOÐ220 with copper tab. The copper tab
can be connected to a heat sink if
necessary.
Features
s 5V +/- 2% Regulated
Output
s Low Dropout Voltage
(0.6V @ 0.5A)
s 750mA Output Current
Capability
s Externally Programmed
RESET Delay
s Fault Protection
Reverse Battery
60V Load Dump
-50V Reverse Transient
Short Circuit
Thermal Shutdown
Block Diagram
Over Voltage
Shutdown
Delay
Gnd
Pre-
Regulator
Regulated Supply
for Circuit Bias
Bandgap
Reference
Charge
Current
Generator
Thermal
Shutdown
Latching Discharge
QS
R
-
+
VDISC
Error Amplifier
Anti-Saturation
and
Current Limit
Delay Comparator
+
-
VIN
VOUT
VOUTSENSE
RESET
Package Options
5 Lead TO-220
1 VIN
2 VOUT
3 Gnd
4 Delay
5 RESET
1
Rev. 2/5/99
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




CS8122YTHA5 pdf, 반도체, 판매, 대치품
Typical Performance Characteristics: continued
Line Regulation vs. Output Current
Load Regulation vs. Output Current
100
80
60
40
20
0
-20
-40
-60
-80
-100
0
VIN 6-26V
TEMP = 25ûC
TEMP = - 40ûC
TEMP = 125ûC
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
Quiescent Current vs. Output Current
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
FREQUENCY (Hz)
103
102
101
100
10-1
10-2
10-3
10-4
100
Output Capacitor ESR
CO= 47/68mF
Stable Region
CO= 47mF
CO= 68mF
101 102
Output Current (mA)
103
4

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CS8122YTHA5 전자부품, 판매, 대치품
Application Notes: continued
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
(3)
where:
RQJC = the junctionÐtoÐcase thermal resistance,
RQCS = the caseÐtoÐheatsink thermal resistance, and
RQSA = the heatsinkÐtoÐambient thermal resistance.
RQJC appears in the package section of the data sheet. Like
RQJA, it too is a function of package type. RQCS and RQSA
are functions of the package type, heatsink and the inter-
face between them. These values appear in heat sink data
sheets of heat sink manufacturers.
7

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관련 데이터시트

부품번호상세설명 및 기능제조사
CS8122YTHA5

2% 5V/ 750mA Low Dropout Linear Regulator with Delayed RESET

Cherry Semiconductor Corporation
Cherry Semiconductor Corporation

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