參數(shù)資料
型號(hào)： UCC2806QTR
廠商： Texas Instruments, Inc.
英文描述： LOW-POWER, DUAL-OUTPUT, CURRENT-MODE PWM CONTROLLER
中文描述： 低功耗，雙輸出，電流模式PWM控制器
文件頁(yè)數(shù)： 4/21頁(yè)
文件大?。?/td> 726K
代理商： UCC2806QTR
SLUS272C FEBRUARY 2000 REVISED JUNE 2003
4
www.ti.com
ELECTRICAL CHARACTERISTICS
VIN = 12 V, RT = 33 k
, CT = 330 pF, CBYPASS on VREF = 0.01
μ
F, 55
°
C < TA < 125
°
C for the UCC1806, 40
°
C < TA < 85
°
C for the
UCC2806, 0
°
C < TA < 70
°
C for the UCC3806, and TA = TJ (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
OSCILLATOR (continued)
IDCHG
VOL
VOH
VIL
VIH
ISYNC
ERROR AMPLIFIER
Discharge current
TJ = 25
°
C,
IOUT = 1 mA
IOUT = 4 mA
VCT = 0 V,
VCT = 0 V,
VCT = 2.0 V
2
mA
Low-level output voltage, SYNC
0.4
High-level output voltage, SYNC
2.4
V
Low-level input voltage, SYNC
VRT = VREF
VRT = VREF
0.8
High-level input voltage, SYNC
2.0
Input current, SYNC
1
1
μ
A
Input offset voltage
UCC1806
UCC2806
5
mV
UCC3806
10
IBIAS
IOFSET
CMR
Input bias current
1
μ
A
nA
Input offset current
Common mode range(1)
500
0
VIN2
V
AVOL
GBW
Open loop gain
1 V
≤
VOUT
≤
4 V
80
100
dB
bandwidth
1
MHz
ICOMP_SINK
ICOMP_SRC
VCOMP_L
VCOMP_H
CURRENT SENSE AMPLIFIER
Amplifier gain(3)(4)
Output sink current
VID < 20 mV,
VID < 20 mV,
VID = 50 mV
VID = 50 mV
VCOMP = 1 V
VCOMP = 3 V
1
mA
μ
A
Output source current
80
120
Low-level output voltage
0.5
V
High-level output voltage
4.5
A
VCS = 0 V,
VCURLIM = VNI = VREF,
VINV = 0V
VCURLIM = VREF
2.75
3.00
3.35
V/V
Maximum differential input signal (VCS+
VCS)
1.1
V
Input offset voltage
UCC1806
UCC2806
VCURLIM = 0.5 V, VCOMP = OPEN
10
30
μ
A
UCC3806
VCURLIM = 0.5 V, VCOMP = OPEN
0 V
≤
VCM
≤
(VIN 3.5 V)
10
50
mV
CMRR
Common mode rejection ratio
60
dB
PSRR
Power supply rejection ratio
Input bias current (3)
Input offset current (3)
56
dB
μ
A
μ
A
IBIAS
VCURLIM = 0.5 V, VCOMP = OPEN
VCURLIM = 0.5 V, VCOMP = OPEN
VNI = VREF,
VCURLIM = 2.75 V,
(VCS+ VCS) = 0 V to 1.5 V step
1
1
Delay-to-output time (5)
VINV = 0 V,
125
175
ns
CURRENT LIMIT ADJUST
Current limit offset
VCS = VCS+ = 0 V, VCOMP = OPEN
0.4
0.5
0.6
V
IBIAS
Input bias current
1
Minimum latching current
300
200
μ
A
Maximum non-latching current
Line range = 10 V to 15 V, load range = 0.2 mA to 5 mA
Ensured by design. Not production tested.
200
80
(1)
(2)
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