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參數(shù)資料
| 型號(hào)： | UC2638J |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 0.5 A, CDIP20 |
| 封裝： | CERAMIC, DIP-20 |
| 文件頁(yè)數(shù)： | 4/9頁(yè) |
| 文件大?。?/td> | 304K |
| 代理商： | UC2638J |
4
UC1638
UC2638
UC3638
Note 1: Oscillator triangle amplitude = 2.5 PV
±AREF.
Note 2: Deadband =
±(REF DB), referenced to COMP.
Note 3: Offset = AREFIN
AREF.
AOUT1, BOUT1: AOUT1 and BOUT1 are open collector
output drivers capable of sinking 50mA. These outputs
can be pulled up to 60V maximum. With a few external
components, these outputs can drive the opposite high
side switches in a full bridge arrangement.
AOUT2, BOUT2: AOUT2 and BOUT2 are totem pole
output drivers capable of driving external power MOS-
FETs directly. The peak current ratings are
±500mA. An
integrated zener clamp limits the drive output amplitude
to approximately 14V to prevent MOSFET gate oxide
overstress. These outputs are configured to drive the
opposite low side switches in a full bridge arrangement.
AREF: The voltage on AREF is simply a buffered ver-
sion of the voltage on AREFIN. In single supply applica-
tions, AREF should be bypassed to VEE with a 0.1
F
ceramic capacitor to provide a stable reference level for
the internal circuitry.
AREFIN: The voltage on AREFIN is generated inter-
nally by a 50% voltage divider tied between VCC and
VEE. As such, it provides the mid supply reference
needed for the oscillator, voltage amplifier, current am-
plifier and current limit comparators when operating in
single supply mode. A buffer amplifier is connected be-
tween AREFIN and AREF. In bipolar supply applications
AREFIN is usually connected to VEE, which disables
the buffer amplifier, and AREF is connected to 0V.
COMP: This is the output of the high slew rate error am-
plifier. The level on COMP modulates the controller duty
cycle via the PWM comparators and the oscillator ramp.
Compensation and DC gain setting resistors are con-
nected between COMP and INV.
CS-: This is the inverting input to the X5 current sense
amplifier. The common mode input range for this pin ex-
tends from VEE
1V to VCC4V. A low value resistor in
PIN DESCRIPTIONS
ELECTRICAL CHARACTERISTICS
Unless otherwise specified; VCC = 15V, VEE =–15V, CT = 680pF, RT = 3k,
VPVSET = 1.5V, VCOMP = 0V, VCSOUT = 0V, VDB = REF, VEXTREF = 0V, VSD =
VCC – 3V, TA =
55°C to 125°C for the UC1638, 25°C to 85°C for the UC2638,
0°C to 70°C for the UC3638. TA =TJ.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
X5 Amplifier
Gain
VID = 100mV to 400mV
4.75
5
5.25
V/V
Common Mode Rejection
VCS+,VCS
= AREF
±5V
50
65
dB
3dB Bandwidth
300
400
kHz
Slew Rate Rising
.75
1.5
V/
s
Slew Rate Falling
.75
1.5
V/
s
Shutdown
Threshold
Ref. to VCC
1.9
2.25
2.5
V
Input Bias Current
VSD = SD Threshold
0.5
10
A
Current Limit
Threshold Positive
Measured Between CS+ and CS-
400
500
600
mV
Threshold Negative
Measured Between CS+ and CS-
– 600
500
– 400
mV
Propagation Delay to Outputs
Overdrive = 200mV
150
250
ns
Deadband Adjust
Maximum Deadband
VDB =0V
±5V
Zero Deadband
VDB = REF
0
V
Deadband Adjustment Gain
VDB = 1V to 4V (Note 2)
± 0.9
± 1
± 1.2
V/V
Input Bias Current
VDB = VREF
3
15
A
AREF Buffer
Gain
AREF / VCC
VEE
0.49
0.5
0.51
V/V
Offset
(Note 3)
30
100
mV
(continued)
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| UC2638N | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Advanced PWM Motor Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| UC2638NG4 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Advanced PWM Motor Controller RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| UC2638Q | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC Motor Controller/Driver |
| UC2638QTR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC Motor Controller/Driver |
| UC2638-W | 制造商:Texas Instruments 功能描述:WAFER FORM - Gel-pak, waffle pack, wafer, diced wafer on film |
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