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參數(shù)資料
| 型號(hào)： | UTCUA8868 |
| 廠商： | 友順科技股份有限公司 |
| 英文描述： | LINEAR INTEGRATED CIRCUIT |
| 中文描述： | 線性集成電路 |
| 文件頁(yè)數(shù)： | 4/6頁(yè) |
| 文件大小： | 165K |
| 代理商： | UTCUA8868 |
UTC UA8868 LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
www.unisonic.com.tw
QW-R109-020,B
POWER DISSIPATION CURVE
25
50
75
100
125
150 Ta (
)
1.0
1.5
2.0
Pd (W)
*70mm
*Debating in done at 17.6mW /
70mm
1.6mm glass epoxy board.
for operating above Ta=25
OPERATING NOTES
(1) The built-in thermal shutdown circuit will shutdown the output current when the chip junction temperature reaches 150
(typ.).The hysteresis is set to 25
(typ.), so the circuit will restart up if the chip temperature falled down below 125
(typ.)
(2) If mute pin is setted to under 0.5V or NC, output current is off (except for spindle driver). Mute pin voltage should be
higher than 2.0V for normal application.
(3) Bias pin (pin 27) should be set to more than 1.2V for proper working. If the bias pin voltage is fall below 0.9V (typ.),
the output current will be muted.
(4) Insert the bypass capacitor (~ 0.1
F ) between Vcc pin and GND pin as close as possible.
(5) when Vcc1 voltage drop to below 3.8V, functions are muted. The function will return to work when Vcc1 increase to
over a hysterisis of 03.V (typ.)
(6) Heat dissipation fins are connected to the GND of the chip. Make sure to connect them to power supply GND.
Tray driver logic input:
FWD (pin6)
REV (pin7)
VOL+ (pin10)
L
L
OPEN
L
H
L
H
L
H
H
H
L
Input circuit of pin6 and pin7 is designed to avoid simultaneous activation of upper and lower output transistors.;
however, in order to improve reliability, apply motor forward/reverse input once each input with time interval be longer
than 10msec.
“H” Side output voltage (V
OL+
, V
OL-
) varies depending on output control terminal for tray (pin21),which is set about three
times of V
TCL
(pin21) (9.2dB Typ.). And, “L” Side output voltage is equal to output saturation voltage for working mode.
. And the “H” side and “L” side output voltage are both eaqual to V
CC
/2 when in open mode and brake mode.
VOL- (pin9)
OPEN
H
L
L
Function
Open mode
Reverse mode
Forward mode
Brake mode
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| UTCUC3842A | CURRENT MODE PWM CONTROL CIRCUITS |
| UTCUC3843A | CURRENT MODE PWM CONTROL CIRCUITS |
| UTCUC723 | ADJUSTABLE VOLTAGE REGULATOR |
| UTCULN2003 | SEVEN DARLINGTON ARRAYS |
| UTCUM66TXXL | MELODY INTEGRATED CIRCUIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UTCUC3842A | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS |
| UTCUC3843A | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS |
| UTCUC723 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:ADJUSTABLE VOLTAGE REGULATOR |
| UTCULN2003 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:SEVEN DARLINGTON ARRAYS |
| UTCUM66TXXL | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:MELODY INTEGRATED CIRCUIT |
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