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UC1856-SP датащи(PDF) 5 Page - Texas Instruments

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номер детали UC1856-SP
подробное описание детали  Improved Current-Mode PWM Controller
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

UC1856-SP датащи(HTML) 5 Page - Texas Instruments

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COMP
CS
CS
V
G
;
V
0 to 1 V
V
D
=
D
- =
D
+
UC1856-SP
www.ti.com
SLUSBV6 – APRIL 2014
6.5 Electrical Characteristics
Unless otherwise stated, these specifications apply for TA –55°C to +125°C, VIN = 15 V, RT = 10 kΩ, CT = 1 nF, TA = TJ.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
REFERENCE SECTION
Output voltage
TJ = 25°C, lO = 1 mA
5.05
5.1
5.15
V
Line regulation
VIN = 8 to 40 V
20
mV
Load regulation
lO = –1 mA to –10 mA
15
mV
Total output variation
Line, load, and temperature
5
5.2
V
Output noise voltage
10 Hz < f < 10 kHz, TJ = 25°C
50
µV
Long-term stability
TJ = 125°C, 1000 Hrs
(1)
5
25
mV
Short-circuit current
VREF = 0 V
–25
–45
–65
mA
OSCILLATOR SECTION
TJ = 25°C
180
200
220
Initial accuracy
kHz
Over operating range
170
230
Voltage stability
VIN = 8 to 40 V
2%
TJ = 25°C, VCT = 2 V
7.5
8
8.8
Discharge current
mA
Over operating range, VCT = 2 V
6.7
8
8.8
Sync output high level
lO = –1 mA
2.4
3.6
V
Sync output low level
lO = 1 mA
0.2
0.4
V
Sync input high level
CT = 0 V, RT = VREF
2
1.5
V
Sync input low level
CT = 0 V, RT = VREF
1.5
0.8
V
Sync input current
CT = 0 V, RT = VREF, VSYNC = 5 V
1
10
µA
Sync delay to outputs
CT = 0 V, RT = VREF, VSYNC = 0.8 to 2 V
50
100
ns
ERROR AMPLIFIER SECTION
Input offset voltage
VCM = 2 V
5
mV
Input bias current
–1
µA
Input offset current
500
nA
Common mode range
VIN = 8 V to 40 V
0
VIN-2
V
Open loop gain
VO = 1.2 V to 3 V
80
100
dB
Unity gain bandwidth
TJ = 25°C
1
1.5
MHz
CMRR
VCM = 0 V to 38 V, VIN = 40 V
75
100
dB
PSRR
VIN = 8 V to 40 V
80
100
dB
Output sink current
VID = –15 mV, VCOMP = 1.2 V
5
10
mA
Output source current
VID = 15 mV, VCOMP = 2.5 V
–0.4
–0.5
mA
Output high level
VID = 50 mV, RL (COMP) = 15 kΩ
4.3
4.6
4.9
V
Output low level
VID = –50 mV, RL (COMP) = 15 kΩ
0.7
1
V
CURRENT SENSE AMPLIFIER SECTION
Amplifier gain
VCS– = 0 V, CL SS Open
(2) (3)
2.5
2.75
3
V/V
Maximum differential-input signal
CL SS Open(2), RL (COMP) = 15 kΩ
1.1
1.2
V
(VCS+ – VCS–)
Input offset voltage
VCL SS = 0.5 V, COMP Open
(3)
5
35
mV
CMRR
VCM = 0 V to 3 V
60
dB
PSRR
VIN = 8 V to 40 V
60
dB
Input bias current
VCL SS = 0.5 V, COMP Open
(2)
–1
1
µA
Input offset current
VCL SS = 0.5 V, COMP Open
(2)
–1
1
µA
Input common-mode range
0
3
V
VEA+ = VREF, EA– = 0 V
Delay to outputs
120
250
ns
CS+ – CS– = 0 V to 1.5 V
(1)
This parameter, although ensured over the recommended operating conditions, is not 100% tested in production.
(2)
Parameter measured at trip point of latch with VEA+ = VREF, VEA– = 0 V.
(3)
Amplifier gain defined as:
Copyright © 2014, Texas Instruments Incorporated
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