LTC1504 Datasheet, PDF (2/12 Pages) Linear Technology – 500mA Low Voltage Step-Down Synchronous Switching Regulator

LTC1504
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage (V_CC to GND) ................................... 10V
Peak Output Current (SW) ....................................... ±1A
Input Voltage (All Other Pins) ......... – 0.3V to V_CC + 0.3V
Operating Temperature Range ..................... 0°C to 70°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER I FOR ATIO
I_MAX 1
V_CC 2
SW 3
GND 4
TOP VIEW
8 COMP
7 SS
6 SHDN
5 FB/SENSE*
ORDER PART
NUMBER
LTC1504CS8
LTC1504CS8-3.3
S8 PACKAGE
8-LEAD PLASTIC SO
*FB FOR LTC1504CS8, SENSE FOR LTC1504CS8-3.3
T_JMAX = 115°C, θ_JA = 90°C/W
S8 PART MARKING
1504
15043
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS V_CC = 5V, T_A = 25°C unless otherwise specified. (Note 2)
SYMBOL
V_CC
V_FB
∆V_FB
V_SENSE
∆V_SENSE
I_CC
f_OSC
R_SW
V_IH
V_IL
I_IN
V_OH
V_OL
I_OH, I_OL
g_mV
A_V
g_mI
I_MAX
I_SS
t_r, t_f
DC_MAX
PARAMETER
Minimum Supply Voltage
Feedback Voltage
Feedback Voltage PSRR
Sense Pin Voltage
Sense Voltage PSRR
Supply Current
Internal Oscillator Frequency
Internal Switch Resistance
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Current
Error Amplifier Positive Swing
Error Amplifier Negative Swing
Error Amplifier Output Current
Error Amplifier Transconductance
Error Amplifier DC Gain
I_LIM Amplifier Transconductance
I_MAX Sink Current
Soft Start Source Current
Output Switch Rise/Fall Time
Maximum Duty Cycle
CONDITIONS
(Note 7)
LTC1504CS8
Figure 1, 4V ≤ V_CC ≤ 10V, LTC1504CS8
LTC1504CS8-3.3
Figure 1, 4V ≤ V_CC ≤ 10V, LTC1504CS8-3.3
Figure 1, V_SHDN = V_CC, I_OUT = 0 (Note 4)
Figure 1, V_SHDN = V_CC, I_OUT = 0, V_FB/V_SENSE = V_CC (Note 4)
V_SHDN = 0V
Figure 2
Figure 2
Figure 2
(Note 5)
(Note 5)
(Note 6)
V_IMAX = V_CC
V_SS = 0V
V_COMP = V_CC
MIN
q4
q 1.25
q
q 3.20
q
q
q
q 150
q
q 2.4
q
q
q 4.5
q
q ±50
q 350
q 40
1000
q8
q –8
q
q 84
TYP MAX
1.265 1.28
1.1 1.6
3.30 3.40
1.2 1.8
3
0.3 0.6
1.0 20
200 250
1.3 2.0
±0.1
4.95
0.05
±100
600
48
2000
12
– 12
5
90
0.8
±1
0.5
±200
1100
3000
16
– 16
50
UNITS
V
V
%
V
%
mA
mA
µA
kHz
Ω
V
V
µA
V
V
µA
µmho
dB
µmho
µA
µA
ns
%
2