參數(shù)資料
型號： TL594IDRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 0.25 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO16
封裝： GREEN, PLASTIC, MS-012AC, SOIC-16
文件頁數(shù)： 16/21頁
文件大?。?/td> 646K
代理商： TL594IDRG4
www.ti.com
s
+
N
n+1
(xn * X)
2
N * 1
ELECTRICAL CHARACTERISTICS
PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS052G – APRIL 1988 – REVISED JANUARY 2007
V
CC = 15 V, over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS(1)
MIN
TYP(2)
MAX
UNIT
Reference Section
Output voltage (REF)
IO = 1 mA, TA = 25°C
4.95
5
5.05
V
Input regulation
VCC = 7 V to 40 V, TA = 25°C
2
25
mV
Output regulation
IO = 1 mA to 10 mA, TA = 25°C
14
35
mV
Output-voltage change with temperature
T
A = MIN to MAX
2
10
mV/V
Short-circuit output current(3)
Vref = 0
10
35
50
mA
Amplifier Section (see Figure 1)
Input offset voltage, error amplifier
FEEDBACK = 2.5 V
2
10
mV
Input offset current
FEEDBACK = 2.5 V
25
250
nA
Input bias current
FEEDBACK = 2.5 V
0.2
1
A
Common-mode input voltage range,
0.3 to
VCC = 7 V to 40 V
V
error amplifier
VCC – 2
Open-loop voltage amplification,
V
O = 3 V, RL = 2 k, VO = 0.5 V to 3.5 V
70
95
dB
error amplifier
Unity-gain bandwidth
VO = 0.5 V to 3.5 V, RL = 2 k
800
kHz
Common-mode rejection ratio,
VCC = 40 V, TA = 25°C
65
80
dB
error amplifier
Output sink current, FEEDBACK
VID = –15 mV to –5 V, FEEDBACK = 0.5 V
0.3
0.7
mA
Output source current, FEEDBACK
VID = 15 mV to 5 V, FEEDBACK = 3.5 V
–2
mA
Oscillator Section, CT = 0.01 F, RT = 12 k (see Figure 2)
Frequency
10
kHz
Standard deviation of frequency(4)
All values of VCC, CT, RT, and TA constant
100
Hz/kHz
Frequency change with voltage
VCC = 7 V to 40 V, TA = 25°C
1
Hz/kHz
Frequency change with temperature(5)
T
A = MIN to MAX
50
Hz/kHz
Dead-Time Control Section (see Figure 2)
Input bias current
VI = 0 to 5.25 V
–2
–10
A
Maximum duty cycle, each output
DTC = 0 V
0.45
Zero duty cycle
3
3.3
Input threshold voltage
V
Maximum duty cycle
0
Output Section
VC = 40 V, VE = 0 V, VCC = 40 V
2
100
Collector off-state current
A
DTC and OUTPUT CTRL = 0 V, VC = 15 V,
4
200
VE = 0 V, VCC = 1 V to 3 V
Emitter off-state current
VCC = VC = 40 V, VE = 0
–100
A
Common emitter, VE = 0, IC = 200 mA
1.1
1.3
Collector-emitter saturation voltage
V
Emitter follower, VC = 15 V, IE = –200 mA
1.5
2.5
Output control input current
VI = Vref
3.5
mA
(1)
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
(2)
All typical values, except for parameter changes with temperature, are at TA = 25°C.
(3)
Duration of the short circuit should not exceed one second.
(4)
Standard deviation is a measure of the statistical distribution about the mean, as derived from the formula:
(5)
Temperature coefficient of timing capacitor and timing resistor is not taken into account.
4
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