TL384XB Datasheet, PDF (5/21 Pages) Texas Instruments – HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS

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TL284xB, TL384xB
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610A – AUGUST 2006 – REVISED SEPTEMBER 2006
Reference Section Electrical Characteristics
V_CC = 15 V⁽¹⁾, R_T = 10 kΩ, C_T = 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
PARAMETER
TEST CONDITIONS
TL284xB
MIN TYP⁽²⁾
MAX
TL384xB
MIN TYP⁽²⁾
UNIT
MAX
Output voltage
Line regulation
Load regulation
Average temperature
coefficient of output voltage
I_O = 1 mA, T_J = 25°C
V_CC = 12 V to 25 V
I_O = 1 mA to 20 mA
4.95
5
5.05
4.9
5
5.1 V
6
20
6
20 mV
6
25
6
25 mV
0.2
0.4
0.2
0.4 mV/°C
Output voltage, worst-case V_CC = 12 V to 25 V,
variation
I_O = 1 mA to 20 mA
Output noise voltage
f = 10 Hz to 10 kHz, T_J = 25°C
Output-voltage long-term drift After 1000 h at T_J = 25°C
Short-circuit output current
4.9
5.1
50
5
25
–30
–100
–180
4.82
5.18 V
50
µV
5
25 mV
–30
–100
–180 mA
(1) Adjust V_CC above the start threshold before setting it to 15 V.
(2) All typical values are at T_J = 25°C.
Oscillator Section⁽¹⁾ Electrical Characteristics
V_CC = 15 V⁽²⁾, R_T = 10 kΩ, C_T = 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
PARAMETER
TEST CONDITIONS
TL284xB
MIN TYP⁽³⁾
MAX
TL384xB
MIN TYP⁽³⁾
UNIT
MAX
Initial accuracy
T_J = 25°C, R_T = 62 kΩ,
C_T = 1 nF, Min = 225 kHz,
Max = 275 kHz
49
52
55
49
52
55
kHz
Voltage stability
Temperature stability
T_J = Full range
V_CC = 12 V to 25 V
48
56
48
56
0.2
1
0.2
1%
5
5
%
Amplitude
Discharge current
Peak to peak
T_J = 25°C, R_T/C_T = 2 V
R_T/C_T = 2 V
1.7
1.7
V
7.8
8.3
8.8
7.8
8.3
8.8
mA
7.5
8.8
7.6
8.8
(1) Output frequency equals oscillator frequency for the TL3842B and TL3843B. Output frequency is one-half the oscillator frequency for the
TL3844B and TL3845B.
(2) Adjust V_CC above the start threshold before setting it to 15 V.
(3) All typical values are at T_J = 25°C.
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