NCP1729SN35T1G ON Semiconductor, NCP1729SN35T1G Datasheet

IC INVERTER SWITCHED CAP 6TSOP

NCP1729SN35T1G

Manufacturer Part Number
NCP1729SN35T1G
Description
IC INVERTER SWITCHED CAP 6TSOP
Manufacturer
ON Semiconductor
Type
Switched Capacitor (Charge Pump), Invertingr
Datasheet

Specifications of NCP1729SN35T1G

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
-1.15 ~ -5.5 V, 2.3 ~ 11 V
Current - Output
50mA
Frequency - Switching
35kHz
Voltage - Input
1.15 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SC-74-6
Power - Output
313mW
Function
Inverting
Output Voltage
- 5.5 V to - 1.15 V
Output Current
100 mA
Maximum Operating Temperature
+ 150 C
Mounting Style
SMD/SMT
Operating Supply Voltage (min)
1.15V
Operating Supply Voltage (max)
5.5V
Package Type
TSOP
Pin Count
6
Mounting
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
NCP1729SN35T1GOS
NCP1729SN35T1GOS
NCP1729SN35T1GOSTR

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NCP1729
Switched Capacitor
Voltage Inverter
designed for operation over an input voltage range of 1.15 V to 5.5 V
with an output current capability in excess of 50 mA. The operating
current consumption is only 122 mA, and a power saving shutdown
input is provided to further reduce the current to a mere 0.4 mA. The
device contains a 35 kHz oscillator that drives four low resistance
MOSFET switches, yielding a low output resistance of 26 W and a
voltage conversion efficiency of 99%. This device requires only two
external 3.3 mF capacitors for a complete inverter making it an ideal
solution for numerous battery powered and board level applications.
The NCP1729 is available in the space saving TSOP−6 package.
Features
Typical Applications
© Semiconductor Components Industries, LLC, 2006
March, 2006 − Rev. 4
V
The NCP1729 is a CMOS charge pump voltage inverter that is
Operating Voltage Range of 1.15 V to 5.5 V
Output Current Capability in Excess of 50 mA
Low Current Consumption of 122 mA
Power Saving Shutdown Input for a Reduced Current of 0.4 mA
Operation at 35 kHz
Low Output Resistance of 26 W
Space Saving TSOP−6 Package
Pb−Free Package is Available
LCD Panel Bias
Cellular Telephones
Pagers
Personal Digital Assistants
Electronic Games
Digital Cameras
Camcorders
Hand Held Instruments
in
This device contains 77 active transistors.
Figure 1. Typical Application
1
2
3
6
5
4
−V
out
1
†For information on tape and reel specifications,
NCP1729SN35T1
NCP1729SN35T1G
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
(Note: Microdot may be in either location)
Device
ORDERING INFORMATION
1
V
V
C−
out
EAD = Device Code
A
Y
W
G
in
PIN CONNECTIONS
CASE 318G
http://onsemi.com
SN SUFFIX
(SOT23−6)
TSOP−6
1
2
3
= Assembly Location
= Year
= Work Week
= Pb−Free Package
(Top View)
(Pb−Free)
Package
TSOP−6
TSOP−6
Publication Order Number:
6
5
4
6
1
C+
SHDN
GND
Tape & Reel
Tape & Reel
MARKING
DIAGRAM
EADAYW G
Shipping
NCP1729/D
3000 /
3000 /
G

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NCP1729SN35T1G Summary of contents

Page 1

... Hand Held Instruments This device contains 77 active transistors. Figure 1. Typical Application © Semiconductor Components Industries, LLC, 2006 March, 2006 − Rev. 4 NCP1729SN35T1 NCP1729SN35T1G −V out †For information on tape and reel specifications, 1 http://onsemi.com MARKING DIAGRAM TSOP−6 6 (SOT23−6) 1 EADAYW G SN SUFFIX ...

Page 2

MAXIMUM RATINGS* Rating Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Input Voltage Range (V to GND) in Á Á Á Á Á Á Á Á Á Á Á Á ...

Page 3

Figure 14 Test Setup T = 25° 1.0 1.5 2.0 2.5 3.0 3 SUPPLY VOLTAGE (V) in Figure 2. Output Resistance vs. Supply Voltage ...

Page 4

Figure 14 Test Setup 2 −1.0 in −2 3 −3 5 −4.0 −5.0 −6 OUTPUT CURRENT (mA) out Figure 8. ...

Page 5

OSC 3 Figure 14. Test Setup/Voltage Inverter DETAILED OPERATING DESCRIPTION The NCP1729 charge pump converter inverts the voltage applied ...

Page 6

Capacitor Selection In order to maintain the lowest output resistance and output ripple voltage recommended that low ESR capacitors be used. Additionally, larger values of C lower the output resistance and larger values of C reduce output voltage ...

Page 7

The NCP1729 primary function is a voltage inverter. The device will convert 5.0 V into −5.0 V with light loads. Two capacitors are required for the inverter to function. A third capacitor, the input bypass capacitor, may be required ...

Page 8

Figure 20. Cascaded Devices for Increased Negative Output Voltage Two or more devices can be cascaded for increased output voltage. Under light load conditions, the output voltage is approximately equal to −V times the number of ...

Page 9

single device can be used to construct a negative voltage doubler. The output voltage is approximately equal to −2.0 V minus the forward voltage drop of each external diode. The performance characteristics for the above converter ...

Page 10

Capacitors = 3 single device can be used to construct a negative voltage tripler. The output voltage is approximately equal to −3.0 V minus the forward voltage drop of each external diode. ...

Page 11

single device can be used to construct a positive voltage doubler. The output voltage is approximately equal to 2.0 V minus the forward voltage drop of each external diode. The performance characteristics for the above converter ...

Page 12

Capacitors = 3 single device can be used to construct a positive voltage tripler. The output voltage is approximately equal to 3.0 V the forward voltage drop of each external diode. The performance characteristics for ...

Page 13

Figure 30. Load Regulated Negative Output Voltage A zener diode can be used with the shutdown input to provide closed loop regulation performance. This significantly reduces the converter’s output resistance and dramatically enhances the load regulation. For ...

Page 14

Figure 32. Line and Load Regulated Negative Output Voltage An adjustable shunt regulator can be used with the shutdown input to give excellent closed loop regulation performance. The shunt regulator acts as a comparator with a precise ...

Page 15

Figure 35. Paralleling Devices for Increased Negative Output Current An increase in converter output current capability with a reduction in output resistance can be obtained by paralleling two or more devices. The output current ...

Page 16

− out Figure 37. External Switch for Increased Negative Output Current The output current capability of the NCP1729 can be extended beyond 600 mA with the addition of two external switch transistors and ...

Page 17

Figure 39. Line and Load Regulated Negative Output Voltage with High Current Capability This converter is a combination of Figures 37 and 32. It provides a line and load regulated output of −2. ...

Page 18

Figure 42. Positive Output Voltage Doubler with High Current Capability The NCP1729 can be configured to produce a positive output voltage doubler with current capability of 500 mA. This is accomplished with ...

Page 19

Figure 44. Line and Load Regulated Positive Output Voltage Doubler with High Current Capability This converter is a combination of Figures 42 and the shunt regulator to close the loop. In this ...

Page 20

single device can be used to split a negative input voltage. The output voltage is approximately equal to −V performance characteristics are shown below. Note that the converter has an output resistance −1.5 −1.7 ...

Page 21

Figure 49. Combination of a Closed Loop Negative Inverter with a Positive Output Voltage Doubler All of the previously shown converter circuits have only single outputs. Applications requiring multiple outputs can be constructed by ...

Page 22

... 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 ...

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