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PDF TCK111G Data sheet ( Hoja de datos )
| Número de pieza | TCK111G | |
| Descripción | Ultra Low On resistance Load Switch IC | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TCK111G (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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TCK111G,TCK112G
TOSHIBA CMOS Linear Integrated Circuit Silicon Monolithic
TCK111G, TCK112G
3A, 8 mΩ Ultra Low On resistance Load Switch IC
with Reverse Current Blocking and Thermal Shutdown function
The TCK111G and TCK112G are Load Switch ICs for power
management with Reverse Current Blocking and Thermal Shutdown
function featuring ultra low switch on resistance, high output current
and wide input voltage operation from 1.1 to 5.5 V. Switch ON
resistance is only 8.3 mΩ (typ.) at VIN = 5.0 V, -1.5 A load conditions
and output current is available on 3.0 A. And these feature a slew
rate control driver and output auto-discharge function.
This device is available in 0.5 mm pitch ultra small package
WCSP6C (1.0 mm x 1.5 mm, t: 0.5 mm (typ.)).Thus this devices is
ideal for portable applications that require high-density board
assembly such as cellular phone.
WCSP6C
Weight: 1.4 mg (typ.)
Feature
• Low ON resistance:
RON = 8.3 mΩ (typ.) at VIN = 5.0 V, -1.5 A
RON = 8.4 mΩ (typ.) at VIN = 3.3 V, -1.5 A
RON = 8.4 mΩ (typ.) at VIN = 1.8 V, -1.5 A
RON = 8.5 mΩ (typ.) at VIN = 1.1 V, -1.5 A
• Wide input voltage operation: VIN = 1.1 to 5.5 V
• Reverse current blocking
• Inrush current reducing circuit
• Thermal Shutdown function
• Output auto-discharge ( TCK112G )
• Pull down connection between CONTROL and GND
• Ultra small package : WCSP6C (1.0mm x 1.5mm, t: 0.5 mm(typ.))
1 2014-02-28
1 page  
Application Note
1. Application circuit example (top view)
TCK111G,TCK112G
The figure below shows the recommended configuration for TCK111G and TCK112G.
CONTROL
GND
VIN
CIN
1.0 μF
VOUT
COUT
1.0 μF
LOAD
CL RL
1) Input and Output capacitor
An input capacitor (CIN) and an output capacitor (COUT) are necessary for the stable operation of TCK111G and
TCK112G. And it is effective to reduce voltage overshoot or undershoot due to sharp changes in output current and
also for improved stability of the power supply. When used, place CIN and COUT more than 1.0μF as close to VIN
pin to improve stability of the power supply.
2) Control pin
A control pins for TCK111G and TCK112G are both Active High, which controls both the pass-through n-ch
MOSFET and the discharge n-ch MOSFET (only for TCK112G), operated by the control voltage and Schmitt trigger.
When the control voltage level is High, Output n-ch MOSFET is ON state and discharge n-ch MOSFET is OFF
state. When control voltage level is Low, and the state of the MOSFETs is reversed. Also, pull down resistance
equivalent to a few MΩ is connected between CONTROL and GND, thus the load switch IC is in OFF state even
when CONTROL pin is OPEN. In addition, CONTROL pin has a tolerant function such that it can be used even if
the control voltage is higher than the input voltage.
2. Reverse current blocking
Reverse current blocking function is designed in these products. This function is active regardless output n-ch
MOSFET ON/OFF state in condition that VIN is supplied
However these does not assure for the suppression of uprising device operation. In use of these products, please
read through and understand dissipation idea for absolute maximum ratings from the above mention or our
‘Semiconductor Reliability Handbook’. Then use these products under absolute maximum ratings in any condition.
Furthermore, Toshiba recommend inserting failsafe system into the design.
3. Thermal shut down function
Thermal shutdown function is designed in these products, but these does not assure for the suppression of uprising
device operation. In use of these products, please read through and understand dissipation idea for absolute
maximum ratings from the above mention or our ‘Semiconductor Reliability Handbook’. Then use these products
under absolute maximum ratings in any condition. Furthermore, Toshiba recommend inserting failsafe system into the
design.
5 2014-02-28
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet TCK111G.PDF ] | |
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