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L6668TR 데이터시트(PDF) 5 Page - STMicroelectronics

부품명 L6668TR
상세설명  SMART PRIMARY CONTROLLER
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6668TR 데이터시트(HTML) 5 Page - STMicroelectronics

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L6668
REFERENCE VOLTAGE
VREF
Output voltage
(2) Tj = 25 °C; IREF = 1 mA
4.925
5
5.075
V
VREF
Total variation
Vcc= 9.4 to 22 V,
IREF = 1 to 5 mA
4.8
5.13
V
IREF
Short circuit current
VREF = 0
10
30
mA
Sink capability in UVLO
Vcc = 6V; Isink = 0.5 mA
0.2
0.5
V
PWM CONTROL
VCOMPH
Maximum level
ICOMP =0
5.5
V
ICOMP
Max. source current
VCOMP = 1 V
320
400
480
µA
RCOMP
Dynamic resistance
VCOMP = 2 to 4 V
22
k
Dmax
Maximum duty cycle
VCOMP = 5 V
70
75
%
Dmin
Minimum duty cycle
VCOMP = 1 V
0
%
CURRENT SENSE COMPARATOR
IISEN
Input Bias Current
VISEN = 0
-1
µA
tLEB
Leading Edge Blanking
After gate drive low-to-high
transition
160
225
290
ns
td(H-L)
Delay to Output
100
ns
Gain
3.56
3.75
3.94
V/V
VISENx
Maximum signal
VCOMP = 5 V
0.725
0.8
0.875
V
VISENdis
Hiccup-mode OCP level
(2)
1.35
1.5
1.65
V
STANDBY FUNCTION
Vdrop
VCOMP - VSTBY
ISTBY = 0.8 mA, VCOMP<3V
35
mV
Vth
Threshold on VCOMP
(2) Voltage falling
3V
Hysteresis
50
mV
LATCHED DISABLE FUNCTION
IDIS
Input Bias Current
VDIS = 0 to Vth
-1
µA
Vth
Disable threshold
(2) voltage rising
2.1
2.2
2.3
V
OSCILLATOR
fsw
Oscillation Frequency
Tj = 25°C, VCOMP = 5 V
95
100
105
kHz
Vcc = 9.4 to 22V, VCOMP = 5 V
93
100
107
kHz
Vpk
Oscillator peak voltage
(2)
2.8533.15
V
Vvy
Oscillator valley voltage
(2)
0.75
0.9
1.05
V
SLOPE COMPENSATION
S-COMPpk Ramp peak
RS-COMP = 3 k
Ω to GND,
OUT pin high, VCOMP = 5 V
1.61.751.9
V
S-COMPvy Ramp starting value
RS-COMP = 3 k
Ω to GND,
OUT pin high
0.15
0.35
0.55
V
Ramp voltage
OUT pin low
0
Source capability
VS-COMP = VS-COMPpk
0.8
mA
SOFT-START
ISSC
Charge current
Tj = 25 °C
14
20
26
µA
Table 5. Electrical Characteristcs (continued)
(Tj = 0 to 105°C, Vcc=15V, Co=1nF; RT =13.3k , CT =1nF; unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit


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