CS5174GDR8G ON Semiconductor, CS5174GDR8G Datasheet

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CS5174GDR8G

Manufacturer Part Number
CS5174GDR8G
Description
IC MULTI CONFIG SYNC 1.5A 8SOIC
Manufacturer
ON Semiconductor
Type
Step-Up (Boost), Flyback, Forward Converter, Sepicr
Datasheet

Specifications of CS5174GDR8G

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Current - Output
1.5A
Frequency - Switching
560kHz
Voltage - Input
2.7 ~ 30 V
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
CS5174GDR8GOSTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CS5174GDR8G
Manufacturer:
ON Semiconductor
Quantity:
1 700
CS5171, CS5172, CS5173,
CS5174
1.5 A 280 kHz/560 kHz
Boost Regulators
regulators with a high efficiency, 1.5 A integrated switch. These parts
operate over a wide input voltage range, from 2.7 V to 30 V. The
flexibility of the design allows the chips to operate in most power
supply configurations, including boost, flyback, forward, inverting,
and SEPIC. The ICs utilize current mode architecture, which allows
excellent load and line regulation, as well as a practical means for
limiting current. Combining high frequency operation with a highly
integrated regulator circuit results in an extremely compact power
supply solution. The circuit design includes provisions for features
such as frequency synchronization, shutdown, and feedback controls
for either positive or negative voltage regulation. These parts are
pin−to−pin compatible with LT1372/1373.
Features
© Semiconductor Components Industries, LLC, 2010
January, 2010 − Rev. 23
The CS5171/2/3/4 products are 280 kHz/560 kHz switching
Overcurrent Condition
Integrated Power Switch: 1.5 A Guaranteed
Wide Input Range: 2.7 V to 30 V
High Frequency Allows for Small Components
Minimum External Components
Easy External Synchronization
Built in Overcurrent Protection
Frequency Foldback Reduces Component Stress During an
Thermal Shutdown with Hysteresis
Regulates Either Positive or Negative Output Voltages
Shut Down Current: 50 mA Maximum
Pin−to−Pin Compatible with LT1372/1373
Wide Temperature Range
Pb−Free Packages are Available
Part Number
Industrial Grade: −40°C to 125°C
Commercial Grade: 0°C to 125°C
CS5171
CS5172
CS5173
CS5174
Frequency
280 kHz
280 kHz
560 kHz
560 kHz
Feedback Voltage Polarity
negative
negative
positive
positive
1
See detailed ordering and shipping information in the
package dimensions section on page 20 of this data sheet.
MARKING DIAGRAM AND
ORDERING INFORMATION
517xy = Device Code
A
L
Y
W
G
NFB
Test
Test
PIN CONNECTIONS
SS
SS
V
FB
V
http://onsemi.com
C
C
1
1
x= 1, 2, 3, or 4
y= E, G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
CASE 751
D SUFFIX
8
CS5171/3
CS5172/4
SOIC−8
Publication Order Number:
1
8
8
V
PGND
AGND
V
V
PGND
AGND
V
SW
CC
SW
CC
CS5171/D

Related parts for CS5174GDR8G

CS5174GDR8G Summary of contents

Page 1

CS5171, CS5172, CS5173, CS5174 1.5 A 280 kHz/560 kHz Boost Regulators The CS5171/2/3/4 products are 280 kHz/560 kHz switching regulators with a high efficiency, 1.5 A integrated switch. These parts operate over a wide input voltage range, from 2.7 V ...

Page 2

MAXIMUM RATINGS Junction Temperature Range Storage Temperature Range, T STORAGE Package Thermal Resistance, Junction−to−Case, R Junction−to−Ambient, R Lead Temperature Soldering: Reflow (Note 1) ESD, Human Body Model Stresses exceeding ...

Page 3

ELECTRICAL CHARACTERISTICS Commercial Grade: 0°C < T < 125°C; For all CS5171/2/3/4 specifications unless otherwise stated.) J Characteristic Positive and Negative Error Amplifiers FB Reference Voltage (CS5171/3 only) NFB Reference Voltage (CS5172/4 only) FB Input Current (CS5171/3 only) NFB Input ...

Page 4

ELECTRICAL CHARACTERISTICS Commercial Grade: 0°C < T < 125°C; For all CS5171/2/3/4 specifications unless otherwise stated.) J Characteristic Power Switch Switch Saturation Voltage Switch Current Limit Minimum Pulse Width DI / DIV CC SW Switch Leakage General Operating Current Shutdown ...

Page 5

PACKAGE PIN DESCRIPTION Package Pin Pin # Symbol 7 PGND Power ground. This pin is the ground connection for the emitter of the power switching transistor. Connection to a good ground plane is essential High current switch pin. ...

Page 6

TYPICAL PERFORMANCE CHARACTERISTICS 7.2 7.0 6.8 6.6 6.4 6.2 6.0 5.8 5 Temperature (°C) Figure 3. I (No Switching) vs. Temperature CC 1200 1000 800 600 400 200 0 500 I (mA) SW Figure 5. V vs. I ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS 100 −40° 25° 350 380 400 V (mV) FB Figure 9. Switching Frequency vs. V (CS5171/3 only) 1.280 1.278 1.276 1.274 1.272 1.270 ...

Page 8

TYPICAL PERFORMANCE CHARACTERISTICS 2.60 2.50 2. Temperature (°C) Figure 15. Current Limit vs. Temperature 1.7 V High Clamp Voltage C 1.5 1.3 1.1 V Threshold 0.9 C 0.7 0 ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS (V) IN Figure 21. I vs. V During Shutdown CC IN 190 180 170 160 150 140 130 120 110 100 0 50 Temperature (°C) Figure 23. Negative Error Amplifier ...

Page 10

THEORY OF OPERATION Current Mode Control Oscillator S Q − Power Switch PWM Comparator In Out Driver X5 SUMMER 63 mW Slope Compensation Figure 27. Current Mode Control Scheme The CS517x family incorporates a current mode ...

Page 11

Switch Driver and Power Switch The switch driver receives a control signal from the logic section to drive the output power switch. The switch is grounded through emitter resistors (63 mW total) to the PGND pin. PGND is not connected ...

Page 12

The first zero generated by C1 and R1 is 2pC1R1 The phase lead provided by this zero ensures that the loop has at least a 45° phase margin at the crossover frequency. Therefore, this zero should ...

Page 13

Magnetic Component Selection When choosing a magnetic component, one must consider factors such as peak current, core and ferrite material, output voltage ripple, EMI, temperature range, physical size and cost. In boost circuits, the average inductor current is the product ...

Page 14

Summing up, the output voltage peak−peak ripple can be calculated by OUT OUT(RIPPLE OUT) (f) I OUT OUT )(f) The equation can be expressed ...

Page 15

The improved circuit does not require a regulated voltage to operate properly. Unfortunately, a price must be paid for this convenience in the overall efficiency of the circuit. The designer should note that the input and output grounds are no ...

Page 16

This circuit, shown in Figure 40, requires a minimum number of components and allows the Soft−Start circuitry to activate any time the SS pin is used to restart the converter ...

Page 17

)( where FET junction temperature (°C ambient temperature (°C power dissipated by part in question (W junction−to−ambient thermal ...

Page 18

GND 0.1 mF 200 pF 5.0 k Additional Application Diagram, Figure 42 1 GND PGND (7) AGND ( 4.7 nF 2.0 k Figure 43. Additional ...

Page 19

GND 200 pF .01 mF 5.0 k Figure 45. Additional Application Diagram, 2 Input, 5.0 V Output SEPIC Converter R1 R2 1.245 k/0 99.755 k/0 GND 1 V ...

Page 20

... CS5172GDR8 CS5172GDR8G CS5173GD8 CS5173GD8G CS5173GDR8 CS5173GDR8G CS5174GD8 CS5174GD8G CS5174GDR8 CS5174GDR8G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Operating Package SOIC−8 SOIC−8 (Pb−Free) SOIC−8 SOIC− ...

Page 21

... *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “ ...

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