參數(shù)資料
型號： TEA1541P
廠商： NXP SEMICONDUCTORS
元件分類： 穩(wěn)壓器
英文描述： SMPS control IC with synchronization function
中文描述： SWITCHING CONTROLLER, 28 kHz SWITCHING FREQ-MAX, PDIP8
封裝： 0.300 INCH, PLASTIC, MO-001, SOT97-1, SC504-8, DIP-8
文件頁數(shù)： 13/19頁
文件大小： 112K
代理商： TEA1541P
2003 Aug 11
13
Philips Semiconductors
Product specification
SMPS control IC with
synchronization function
TEA1541
Pulse width modulator
t
on(min)
t
on(max)
Oscillator
minimum on-time
maximum on-time
0
1/f
smps
latched
s
f
osc(min)
f
osc
minimum oscillator frequency
oscillator frequency
V
CTRL
> 1.5 V; no sync
V
CTRL
< 1.5 V; no sync;
note 2
sync. on; note 3
24
6
26
28
kHz
kHz
f
smps(max)
maximum SMPS switching
frequency before frequency division
frequency hysteresis for division
voltage on pin CTRL where
frequency reduction starts
peak voltage on pin CTRL where
frequency is equal to f
osc(min)
54
kHz
f
smps(hys)
V
vco(start)
sync. on
sync off
1.38
4
1.46
1.54
kHz
V
V
vco(max)
sync off
1.58
V
Duty cycle control (pin CTRL)
V
CTRL(min)
minimum voltage on pin CTRL for
maximum duty cycle
maximum voltage on pin CTRL for
minimum duty cycle
current on pin CTRL
1.0
V
V
CTRL(max)
1.6
V
I
prot(CTRL)
Burst standby mode (pin CTRL)
0.6
0.8
1.0
μ
A
V
th(burst)(on)
burst standby mode active threshold
voltage
burst standby mode active current
burst standby mode blanking time
charge voltage on pin I
sense
in burst
standby mode
discharge voltage level on pin I
sense
in burst standby mode
charging current into pin I
sense
in
burst standby mode
supply voltage trip level for supply
from pin VIN during burst standby
mode
supply current during burst standby
mode
I
burst
= 4 mA
3.6
V
I
burst
t
blank(burst)
V
ch(sense)(burst)
4
25
7
32
1.25
11
40
mA
μ
s
V
V
dis(sense)(burst)
0.5
V
I
ch(sense)(burst)
100
μ
A
V
CC(burst)
11.2
V
I
CC(burst)
600
μ
A
Synchronization (pin CTRL)
V
sync
V/
t
sync
synchronization recognition voltage
synchronization recognition
0.37
0.52
0.5
(1)
0.65
V
V/
μ
s
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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