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TEA1721DT 데이터시트(PDF) 8 Page - NXP Semiconductors

부품명 TEA1721DT
상세설명  HV start-up flyback controller with integrated MOSFET for 5 W applications, 1270 Hz burst frequency
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제조업체  PHILIPS [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TEA1721DT 데이터시트(HTML) 8 Page - NXP Semiconductors

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TEA1721DT
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 2.1 — 7 June 2012
8 of 14
NXP Semiconductors
TEA1721DT
HV start-up flyback controller with integrated MOSFET for 5 W
8.
Characteristics
Table 5.
Characteristics
VCC = 20 V; VFB = 0 V; Rsource = 1.5 Ω; Tj-switch = 25 °C; Tj-controller = 25 °C; all voltages referenced to GND,
positive currents flow into the IC, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Supply (Pin: VCC)
ICC(startup)0V
start-up supply current
VCC = 0 V
-1.6
-1.2
-0.8
mA
ICC(startup)17V
start-up supply current
VCC = VCC(startup)
-1.6
-0.7
-0.2
mA
ICC(energysave)
supply current in
energy save
VFB = 2.8 V, non-switching
90
130
170
µA
ICC(50kHz)
supply current at
50 kHz
in CC mode
530
750
970
µA
VCC(startup)
start-up supply voltage
15
17
19
V
VCC(stop)
stop supply voltage
undervoltage lockout of IC
7.5
8.5
9.5
V
Totp
overtemperature
protection threshold
temperature on
controller die
140
150
160
°C
Totp(hys)
overtemperature
protection temperature
hysteresis
-50
-°C
Feedback (Pin: FB)
Vth(ovp)fbck
feedback overvoltage
protection threshold
voltage
3.1
3.2
3.3
V
Vref(fbck)
feedback reference
voltage
in CV ode
2.5
2.55
2.6
V
Vth(fbck)CV
constant voltage mode
feedback threshold
voltage
in burst mode operation
2.35
2.4
2.45
V
Vth(det)demag(fb)
demagnetization
detection voltage level
on FB pin
25
50
75
mV
Oscillator (Pins: DRAIN and SOURCE)
fburst
burst frequency
burst frequency in CVB mode, without
jitter
1145
1270
1395
Hz
fjit/fsw
jitter frequency to
switching frequency
ratio
in all operation modes except in CVB
mode
579%
fosc-high
oscillator frequency
High
maximum switching frequency in CV
and CC mode, without jitter
48
50.5
53
kHz
fosc-low
oscillator frequency
Low
minimum switching frequency in CV
and CC mode, without jitter. Switching
frequency in CVB mode
21
22.5
24
kHz
fsweep
jitter sweep frequency
In current source operation
150
200
250
Hz
δmax
maximum duty cycle
72
75
78
%


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