TJ1052 查看數據表（PDF） - HTC Korea

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TJ1052

CONSTANT VOLTAGE & CONSTANT CURRENT CONTROLLER

HTC Korea 

CONSTANT VOLTAGE & CONSTANT CURRENT CONTROLLER TJ1052

ELECTRICAL CHARACTERISTICS

Symbol

Parameters

(TA=25℃ and VCC = +5V, unless otherwise specified)

Condition

Min. Typ. Max. Unit

Total Current Consumption

Total Supply Current - not taking the TA = 25℃

ICC

output sinking current into account

0 < TA < 85°C

Voltage Control Loop

GMV

VREF

Transconduction Gain (VCTRL).

Sink Current Only (Note 1)

Voltage Control Loop (Note 2)

IIBV

Input Bias Current (VCTRL)

TA = 25℃

0 < TA < 85°C

TA = 25℃

0 < TA < 85°C

TA = 25℃

0 < TA < 85°C

Current Control Loop

GMI

VSENSE

Transconduction Gain (ICTRL).

Sink Current Only (Note 3)

Current Control Loop (Note 4)

IIBI

Current out of pin ICTRL at -200mV

TA = 25℃

0 < TA < 85°C

Iout = 2.5 mA

0 < TA < 85°C

TA = 25℃

0 < TA < 85°C

Output Stage

Low output voltage at 10 mA sinking TA = 25℃

VOL

current

0 < TA < 85°C

Output Short Circuit Current. Output to TA = 25℃

IOS

VCC. Sink Current Only

0 < TA < 85°C

1.1

2

mA

1.2

3.5

1

2.5

mA/mV

1.198

1.222

1.21

V

1.186

1.234

200

nA

300

1.5

7

mA/mV

196

204

200

mV

192

208

30

μA

40

200

mV

500

45

90

mA

60

Note 1. If the voltage on VCTRL (the negative input of the amplifier) is higher than the positive amplifier input (VREF=1.210V), and it is increased

by 1mV, the sinking current at the output will be increased by 3.5mA.

Note 2. The internal Voltage Reference is set at 1.210V (bandgap reference). The voltage control loop precision takes into account the

cumulative effects of the internal voltage reference deviation as well as the input offset voltage of the trans-conductance operational

amplifier. The internal Voltage Reference is fixed by bandgap, and trimmed to 0.5% accuracy at room temperature.

Note 3. When the positive input at ICTRL is lower than -200mV, and the voltage is decreased by 1mV, the sinking current at the output will be

increased by 7mA.

Note 4. The internal current sense threshold is set to -200mV. The current control loop precision takes into account the cumulative effects of

the internal voltage reference deviation as well as the input offset voltage of the trans-conduction operational amplifier.

Jul. 2010 – Preliminary

-3-

HTC

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