LM2623LD National Semiconductor, LM2623LD Datasheet - Page 4

• Manufacturer Part Number: LM2623LD
• Description: IC,SMPS CONTROLLER,VOLTAGE-MODE,BICMOS,LLCC,14PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of LM2623LD

• Rohs Compliant: NO

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V
V
V
V
η
D
I
I
I
I
R
θ
θ
θ
Enable Section
V
V
DD
SD
CL
C
JA
JA
JA
DD_ST
IN_OP
FB
OUT_MAX
EN_LO
EN_HI
DS_ON
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
−40˚C to +85˚C. Unless otherwise specified: V
Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device
outside of its rated operating conditions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
ambient thermal resistance), and T
given in the Absolute Maximum Ratings, whichever is lower.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin. For Pin 8 (SW) the ESD rating is 1.0 kV.
Note 4: V
10-50 mv at start-up)
Note 5: This is the current into the V
Note 6: This is the total current into pins V
Note 7: When the EN pin is below V
Symbol
SW Pin Voltage
BOOT, V
FREQ Pin
T
Storage Temperature Range
Lead Temp. (Soldering, 5 sec)
Power Dissipation (T
(Note 2)
Jmax
(Note 2)
DD
DD
tied to Boot and EN pins. Frequency pin tied to V
, EN and FB Pins
Start-Up Supply Voltage 25˚C
Minimum Operating Supply
Voltage (once started)
FB Pin Voltage
Maximum Output Voltage
Efficiency
Switch Duty Cycle
Operating Quiescent Current
(Note 5)
Shutdown Quiescent Current
(Note 6)
Switch Peak Current Limit
Switch Peak Current Limit
MOSFET Switch On
Resistance
Thermal Resistance
Thermal Resistance
Thermal Resistance
EN Pin Voltage Low (Note 7)
EN Pin Voltage High (Note 7)
A
Parameter
=25˚C)
A
(ambient temperature). The maximum allowable power dissipation at any temperature is P
EN_LO
DD
pin.
, the regulator is shut down; when it is above V
DD
, BOOT, SW and FREQ.
J
= 25˚C, and limits in boldface type apply over the full operating temperature range of
−65˚C to +150˚C
−0.5 V to 14.5V
−0.5V to 10V
Condition
I
I
V
500mA
V
FB Pin
V
5.0V; EN Pin
LM2623A
LM2623
MM Package, Junction to
Ambient(Note 2)
LLP Package, Junction to
Ambient(Notes 2, 8)
LLP Package, Junction to
Ambient(Notes 2, 9)
= 200mA
LOAD
LOAD
DD
(Note 1)
IN
IN
DD
= V
DD
= 3.6V; V
= 2.5V; V
, BOOT and SW Pins at
500mW
100µA
= 0mA (Note 4)
= 0mA
150˚C
260˚C
through 121K resistor. V
OUT
>
1.3V; EN Pin at V
= 3.3V.
OUT
OUT
<
200mV
4
= 5V; I
= 3.3V; I
Operating Conditions
ESD Rating (Note 3)
V
FB, EN Pins
BOOT Pin
Ambient Temperature (T
DD
LOAD
EN_HI
DD_ST
Pin
LOAD
DD
, the regulator is operating.
=
= V
DD
when startu-up occurs. V
2. 85
jmax
0.65
1.24
0.01
0.17
Typ
240
14
87
87
17
80
40
56
(maximum junction temperature), θ
A
)
0.7V
1.2028
Min
2.2
1.2
dmax
DD
= (T
IN
(Note 1)
is V
jmax
0.15V
DD
1.2772
- T
Max
0.26
110
1.1
2.5
−40˚C to +85˚C
+ D1 voltage (usually
.8
A
)/ θ
DD
JA
JA
or the number
3V to 5V
0 to V
0 to 10V
(junction to
Units
˚C/W
˚C/W
˚C/W
2kV
µA
µA
%
%
Ω
V
V
V
V
A
A
V
V
DD