TK11320BMIB データシートの表示（PDF） - Toko America Inc

部品番号

コンポーネント説明

メーカー

TK11320BMIB

VOLTAGE REGULATOR WITH ON/OFF SWITCH

Toko America Inc  

TK113xxBM/U

DEFINITION AND EXPLANATION OF TECHNICAL TERMS

OUTPUT VOLTAGE (VOUT)

The output voltage is specified with VIN = (VOUT(TYP) + 1 V)

and IOUT = 30 mA.

DROPOUT VOLTAGE (VDROP)

The dropout voltage is the difference between the input

voltage and the output voltage at which point the regulator

starts to fall out of regulation. Below this value, the output

voltage will fall as the input voltage is reduced. It is

dependent upon the load current and the junction

temperature.

OUTPUT CURRENT (IOUT(MAX))

This is the maximum continuous output current as specified

under the condition where the output voltage drops 0.3 V

below the value specified with IOUT = 30 mA. The input

voltage is set to VOUT +1 V, and the current is pulsed to

minimize temperature effect.

CONTINUOUS OUTPUT CURRENT (IOUT)

Normal operating output current. This is limited by package

power dissipation.

PULSE OUTPUT CURRENT (IOUT(PULSE))

Max pulse width 5 ms, Duty cycle 12.5%: pulse load only.

LINE REGULATION (Line Reg)

Line regulation is the ability of the regulator to maintain a

constant output voltage as the input voltage changes. The

line regulation is specified as the input voltage is changed

from VIN = VOUT(TYP) + 1 V to VIN = VOUT(TYP) + 6 V.

LOAD REGULATION (Load Reg)

Load regulation is the ability of the regulator to maintain a

constant output voltage as the load current changes. It is

a pulsed measurement to minimize temperature effects

with the input voltage set to VIN = VOUT +1 V. The load

regulation is specified under two output current step

conditions of 1 mA to 60 mA and 1 mA to 100 mA.

QUIESCENT CURRENT (IQ)

The quiescent current is the current which flows through

the ground terminal under no load conditions (IOUT = 0 mA).

GROUND CURRENT (IGND)

Ground current is the current which flows through the

ground pin(s). It is defined as IIN - IOUT, excluding control

current.

RIPPLE REJECTION RATIO (RR)

Ripple rejection is the ability of the regulator to attenuate

the ripple content of the input voltage at the output. It is

specified with 100 mVrms, 400 Hz superimposed on the

input voltage, where VIN = VOUT + 1.5 V. The output

decoupling capacitor is set to 10 µF, the noise bypass

capacitor is set to 0.1 µF, and the load current is set to 30

mA. Ripple rejection is the ratio of the ripple content of the

output vs. the input and is expressed in dB.

STANDBY CURRENT (ISTBY)

Standby current is the current which flows into the regulator

when the output is turned off by the control function

(VCONT = VIN). It is measured with VIN = 8 V (9 V for the

8 V output device).

SENSOR CIRCUITS

Overcurrent Sensor

The overcurrent sensor protects the device in the event

that the output is shorted to ground.

Thermal Sensor

The thermal sensor protects the device in the event that

the junction temperature exceeds the safe value (Tj = 150

°C). This temperature rise can be caused by external heat,

excessive power dissipation caused by large input to

output voltage drops, or excessive output current. The

regulator will shut off when the temperature exceeds the

safe value. As the junction temperatures decrease, the

regulator will begin to operate again. Under sustained fault

conditions, the regulator output will oscillate as the device

turns off then resets. Damage may occur to the device

under extreme fault conditions.

April 2000 TOKO, Inc.

Page 9

Share Link: