TEA1541 데이터 시트보기 (PDF) - Philips Electronics
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TEA1541 Datasheet PDF : 19 Pages
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Philips Semiconductors
SMPS control IC with
synchronization function
Product specification
TEA1541
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP.
Pulse width modulator
ton(min)
ton(max)
minimum on-time
maximum on-time
−
latched
−
Oscillator
fosc(min)
fosc
minimum oscillator frequency
oscillator frequency
VCTRL > 1.5 V; no sync −
VCTRL < 1.5 V; no sync; 24
note 2
fsmps(max)
maximum SMPS switching
sync. on; note 3
−
frequency before frequency division
fsmps(hys)
Vvco(start)
frequency hysteresis for division
voltage on pin CTRL where
frequency reduction starts
sync. on
sync off
−
1.38
Vvco(max)
peak voltage on pin CTRL where sync off
−
frequency is equal to fosc(min)
Duty cycle control (pin CTRL)
VCTRL(min)
minimum voltage on pin CTRL for
−
maximum duty cycle
VCTRL(max)
maximum voltage on pin CTRL for
−
minimum duty cycle
Iprot(CTRL)
current on pin CTRL
−0.6
Burst standby mode (pin CTRL)
Vth(burst)(on)
burst standby mode active threshold Iburst = 4 mA
−
voltage
Iburst
burst standby mode active current
4
tblank(burst)
burst standby mode blanking time
25
Vch(sense)(burst) charge voltage on pin Isense in burst
−
standby mode
Vdis(sense)(burst) discharge voltage level on pin Isense
−
in burst standby mode
Ich(sense)(burst)
charging current into pin Isense in
−
burst standby mode
VCC(burst)
supply voltage trip level for supply
−
from pin VIN during burst standby
mode
ICC(burst)
supply current during burst standby
−
mode
0
1/fsmps
6
26
54
4
1.46
1.58
1.0
1.6
−0.8
3.6
7
32
1.25
0.5
100
11.2
600
Synchronization (pin CTRL)
Vsync
∆V/∆tsync
synchronization recognition voltage
synchronization recognition
0.37
−
0.52
0.5(1)
MAX. UNIT
−
−
s
−
kHz
28
kHz
−
kHz
−
kHz
1.54 V
−
V
−
V
−
V
−1.0 µA
−
V
11
mA
40
µs
−
V
−
V
−
µA
−
V
−
µA
0.65 V
−
V/µs
2003 Aug 11
13
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