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Part: IP2842N
Category:
Power Management
-> Regulators
-> Voltage Regulators
Description: Screening Options Available = ;; Package = 8 Pin Dip ;; Description = Current Mode Regulating Pulse Width Modulator ;; Temperature Range = -25 to +85 C ;; Polarity = - ;; Current (A) = - ;; Input Voltage (V) = 30V ;; Output Voltage (V) = - ;; Voltage Drop (typ.) = - ;; Voltage Drop (max.) = -
Company: Semelab Plc
Datasheet: Download IP2842N datasheet File size : 507 kB
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Datasheet text preview:
IP1842 SERIES IP1843 SERIES
TOP VIEW
COMP 1 V FB 2 I SEN SE 3 R T /C T 4
8 7 6 5
VREF VCC OUTPUT GROUND
CURRENT MODE REGULATING PULSE WIDTH MODULATORS
FEATURES
· · · · · Guaranteed ±1% reference voltage tolerance Guaranteed ±10% frequency tolerance Low startup current (<500 mA) Under voltage lockout with hysteresis Output state completely defined for all supply and input conditions · Interchangeable with UC1842 and UC1843 series for improved operation · 500kHz operation
J Package 8 Pin Ceramic DIP N Package 8 Pin Plastic DIP D-8 Package 8 Pin Plastic (150) SOIC TOP VIEW
COMP 1 N/C
2 14 13 12 11 10 9 8
VREF N/C VCC VC OUTPUT GROUND POWER GROUND
V FB 3 N/C
4
I SEN SE 5 N/C
6
R T /C T 7
D-14 Package 14 Pin Plastic (150) SOIC
Order Information
Part Number IP1842 IP2842 IP3842 IP1843 IP2843 IP3843 JPack 8 Pin NPack 8 Pin D8 8 Pin D14 14 Pin Temp. Range -55 to +125°C -25 to +85°C 0 to +70°C -55 to +125°C -25 to +85°C 0 to +70°C Note: To order, add the package identifier to the part number. eg. IP1842J IP3843D-14
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)
VCC IO Supply Voltage Output Current Output Energy Analog Inputs Error Amp Output Sink Current Power Dissipation Derate @ Tamb > 50°C Power Dissipation Derate @ Tcase > 25°C Storage Temperature Range Lead Temperature (low impedance source) (ICC < 30mA) (capacitive load) (pins 2 and 3) Tamb = 25°C Tcase = 25°C +30V Self limiting ±1A 5mJ 0.3V to +VCC 10mA 1W 10mW/°C 2W 24mW/°C 65 to 150°C +300°C
Prelim.3/00
PD PD TSTG TL
(soldering, 10 seconds)
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
IP1842 SERIES IP1843 SERIES
DESCRIPTION
The IP1842 and IP1843 series of switching regulator control circuits contain all the functions necessary to implement offline, current mode switching regulators, using a minimum number of external parts. Functions included are voltage reference, error amplifier, current sense comparator, oscillator, totem pole output driver and under-voltage lockout circuitry. Although pin compatible with the UC1842 and 1843 series, SEMELAB has incorporated several improvements in the IP1842 and IP1843 series allowing tighter and more complete specification of electrical performance.
BLOCK DIAGRAM
VC C
7 /1 2
3 4V G ND
5 /9
U N D E R V O LT A G E L O C KO U T ENABLE R E F E R E N C E 5V R E G U LA TO R IN T E R N A L B IA S 2 .5 V REG
8 /1 4
VR E F
16 V (8 .4 V )
6V (0 .5 V )
S R 3 .6 V R T /CT
4 /7
VR E F STATUS LATCH
7 /1 1
VC
6 /1 0
O S C IL L A T O R ERROR AMP
OUTPUT
2R R 1V
S R CURRENT SENS E C O M P A R A TO R PW M LA TC H
5 /8
VFB COMP I S EN SE
2 /3
POW ER GROUND
1 /1
3 /5
V a lu e s in brackets are for IP1843 series.
P IN NUMBERS 1 s t Number N, J and 8 Pin D Packages 2 n d Num b e r 14 Pin D Package.
RECOMMENDED OPERATING CONDITIONS
VCC IO Supply Voltage 1 Output Current Analog Inputs (pins 2 and 3) IP1842 , IP1843 IP2842 , IP2843 IP3842 , IP3843 Error Amp Output Sink Current Operating Ambient Temperature Range
£
30V
0 to ±200mA 0.3V to 3V 0 to 2mA 55 to 125°C 25 to 85°C 0 to 70°C
Notes:
1. Lower limit set by under voltage lockout specification.
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Prelim.3/00
IP1842 SERIES IP1843 SERIES
ELECTRICAL CHARACTERISTICS (Over Full Operating Temperature Range unless otherwise stated)
IP1842/IP1843 IP2842/IP2843 Min. Typ. Max. 4.95 5.00 6 6 0.2
Line, Load, Temp f = 10Hz to 10kHz TJ = 25°C TJ = 125°C @ 1000Hrs VREF = 0
Parameter
Output Voltage Input Regulation Output Regulation Temperature Stability Total Output Variation Output Noise Voltage Long Term Stability Output Short Circuit Current Frequency Voltage stability Temperature Stability Amplitude Discharge Current
Test Conditions REFERENCE SECTION IO = 1mA TJ = 25°C
VCC = 12V to 25V IO = 1mA to 20mA
Min. 4.90
IP3842 IP3843 Typ. 5.00 6 6 0.2
Max. Units 5.10 20 25 0.4 5.18 V mV mV °C V
m
5.05 20 25 0.4 5.10
4.90 50 5 30 80
4.82 50 5 30 80
V
25 160
25 160
mV mA
OSCILLATOR SECTION
TJ = 25°C VCC = 12V to 25V
D
47
52 0.2 5 1.7 8.3 8
57 1
47
52 0.2 5 1.7 8.3 8
57 1
kHz % % V mA %
TA = Min to Max
VPIN4 Peak to Peak TJ = 25°C
D
TA = Min to Max
ERROR AMP SECTION
Input Voltage Input Bias Current Open Loop Voltage Gain Unity Gain Bandwidth Supply Voltage Rejection Output Sink Current Output Source Current VOUT High VOUT Low VCC = 12V to 25V VPIN2 = 2.7V VPIN2 = 2.3V VPIN2 = 2.3V VPIN2 = 2.7V VPIN1 = 1.1V VPIN1 = 4.6V RL = 15kW RL = 15kW VO = 2V to 4V VPIN1 = 2.5V
2.45
2.50 0.3
2.55 1
2.42
2.50 0.3
2.58 2
V
m
A
65 0.7 60 2 0.5 4.6
90 1 70 6 0.8 4.8 0.7 1.1
65 0.7 60 2 0.5 4.6
90 1 70 6 0.8 4.8 0.7 1.1
dB MHz dB mA V
NOTES
1. Test Conditions unless otherwise stated: VCC = 15V* , RT = 10kW , CT = 3.3nF , f = 52kHz. *Adjust VCC above start threshold before setting at required level. All specifications apply over the full operating temperature range unless otherwise stated. (See Ordering Information for further details).
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Prelim.3/00
Others parts begin by ip
IP-1 IP-2 IP-3 IP-4 IP-5 IP-6 IP-7 IP-8 IP-9 IP-10 IP-11
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