lm2773tlx National Semiconductor Corporation, lm2773tlx Datasheet - Page 3

• Manufacturer Part Number: lm2773tlx
• Description: Low-ripple 1.8v/1.6v Spread-spectrum Switched Capacitor Step-down Regulator
• Manufacturer: National Semiconductor Corporation

V
V
V
E
I
V
V
I
F
R
I
t
V
V
I
I
Q
SD
CL
ON
IH
IL
SW
OUT
OUT
OUT
R
R–PFM
IL
IH
OL
Symbol
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Limits in standard typeface are for T
C
V(EN) = 1.8V, V(SEL) = 0V, C
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation
of the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions,
see the Electrical Characteristics tables.
Note 3: All voltages are with respect to the potential at the GND pins.
V
EN, SEL Pin Voltage
Continuous Power Dissipation
(Note 4)
Junction Temperature (T
Storage Temperature Range
Maximum Lead Temperature
(Soldering, 10 sec.)
ESD Rating (Note 5)
IN
≤
/I
/V
Human Body Model:
OUT
T
Pin Voltage
IN
J
≤
+110°C) . Unless otherwise noted, specifications apply to the LM2773 Typical Application Circuit (pg. 1) with: V
1.8V Mode Output Voltage
Regulation
1.6V Mode Output Voltage
Regulation
Output Load Regulation
Output Line Regulation
Power Efficiency
Quiescent Supply Current
Fixed Frequency Output Ripple
PFM–Mode Output Ripple
Shutdown Current
Switching Frequency
Open-Loop Output Resistance
Output Current Limit
Turn-on Time
Logic-low Input Voltage
Logic-high Input Voltage
Logic-high Input Current
Logic-low Input Current
Parameter
J-MAX
IN
)
= C
J
1
= 25°C. Limits in boldface type apply over the full operating junction temperature range (-30°
= C
-0.3V to (V
2
Internally Limited
-65°C to +150° C
= 1.0µF, C
(Notes 3, 8)
2.5V
0mA
V(SEL) = 1.8V
2.5V
0mA
0mA
I
I
(Note 11)
I
I
V(EN) = 0V
3.0V
I
(Note 9)
V
0V
(Note 13)
EN, SEL Pins
2.5V
EN, SEL Pins
2.5V
V(EN), V(SEL) = 1.8V
(Note 12)
V(EN), V(SEL) = 0V
-0.3V to 6.0V
OUT
OUT
OUT
OUT
OUT
w/ 6.0V max
IN
(Notes 2, 3)
≤
= 5.5V
= 300mA
= 0mA
= 300mA
< 40mA
= 300mA
≤
≤
≤
≤
≤
≤
≤
≤
IN
V
OUT
+0.3V)
150°C
265°C
V
I
V
I
I
V
V
V
OUT
2.5kV
OUT
OUT
OUT
IN
IN
IN
IN
IN
≤
≤
≤
≤
≤
≤
= 4.7µF. (Note 10)
≤
≤
≤
5.5V
5.5V
5.5V
0.2V
5.5V
5.5V
300mA
300mA
300mA
Condition
3
Operating Ratings
(Notes 2, 3)
Thermal Properties
Input Voltage Range
Recommended Load Current Range
Junction Temperature (T
Ambient Temperature (T
(Note 6)
Junction-to-Ambient Thermal
Resistance (θ
(Note 7)
JA
), µSMD-9 Package
(−2%)
(−2%)
1.779
1.587
0.80
Min
1.0
A
J
0
) Range
) Range
1.815
1.619
0.15
1.15
0.01
Typ
500
150
0.3
0.1
1.0
75
48
10
12
5
-30°C to +110°C
-30°C to +85°C
0mA to 300mA
(+2%)
(+2%)
1.851
1.651
0.625
Max
1.50
0.5
V
55
2.5V to 5.5V
IN
www.national.com
IN
75°C/W
= 3.6V;
mV/mA
Units
MHz
%/V
mV
mV
mA
µA
µA
µA
µA
µs
%
Ω
V
V
V