LM2622_04 NSC [National Semiconductor], LM2622_04 Datasheet - Page 4

• Manufacturer Part Number: LM2622_04
• Description: 600kHz/1.3MHz Step-up PWM DC/DC Converter
• Manufacturer: NSC [National Semiconductor]

www.national.com
I
V
I
∆V
%V
I
V
g
A
D
f
I
I
R
Th
UVP
θ
Q
CL
B
S
SHDN
L
m
JA
FB
IN
V
MAX
DSON
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Specifications in standard type face are for T
ture Range ( T
Note 1: Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended to
be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The maximum allowable power dissipation is a function of the maximum junction temperature, T
and the ambient temperature, T
at any ambient temperature is calculated using: P
temperature, and the regulator will go into thermal shutdown.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5kΩ resistor into each pin. The machine model is a 200pF capacitor discharged
directly into each pin.
Symbol
SHDN
(Note 6)
O
V
SW Voltage
FB Voltage
V
SHDN Voltage
FSLCT
Maximum Junction
Temperature
Power Dissipation(Note 2)
Lead Temperature
FB
/∆I
IN
C
/∆V
Voltage
LOAD
IN
Quiescent Current
Feedback Voltage
Switch Current Limit
Load Regulation
Feedback Voltage Line
Regulation
FB Pin Bias Current (Note 8)
Input Voltage Range
Error Amp Transconductance ∆I = 5µA
Error Amp Voltage Gain
Maximum Duty Cycle
Switching Frequency
Shutdown Pin Current
Switch Leakage Current
Switch R
SHDN Threshold
On Threshold
Off Threshold
Thermal Resistance
J
= −40˚C to +125˚C)Unless otherwise specified. V
DSON
Parameter
A
. See the Electrical Characteristics table for the thermal resistance of various layouts. The maximum allowable power dissipation
D
Internally Limited
(MAX) = (T
FB = 0V (Not Switching)
V
V
V
2.0V ≤ V
FSLCT = Ground
FSLCT = V
V
V
V
V
Output High
Output Low
Junction to Ambient(Note 9)
Junction to Ambient(Note 10)
Junction to Ambient(Note 11)
Junction to Ambient(Note 12)
Junction to Ambient(Note 13)
SHDN
IN
IN
SHDN
SHDN
SW
IN
J
= 25˚C and those with boldface type apply over the full Operating Tempera-
= 2.7V (Note 7)
= 3.3V
= 2.7V, I
(Note 1)
= 18V
= 0V
= V
= 0V
J(MAX)
IN
Conditions
150˚C
300˚C
IN
≤ 12.0V
IN
12V
18V
12V
SW
7V
7V
7V
− T
A
= 1A
)/θ
JA
4
. Exceeding the maximum allowable power dissipation will cause excessive die
IN
Operating Conditions
ESD Susceptibility
(Note 3)
Operating Junction
Temperature Range (Note 4)
Storage Temperature
Supply Voltage
=2.0V and I
Vapor Phase (60 sec.)
Infrared (15 sec.)
Human Body Model
Machine Model
(Note 4)
1.2285
Min
480
1.0
0.9
1.8
1.7
40
78
2
1
L
= 0A, unless otherwise specified.
J
(MAX), the junction-to-ambient thermal resistance, θ
(Note 5)
0.013
1.26
1.65
1.25
0.01
−0.5
0.01
1.92
1.82
Typ
135
135
600
235
225
220
200
195
1.3
6.7
0.5
0.2
0.6
0.6
85
5
(Note 4)
1.2915
Max
290
720
2.0
2.3
0.1
1.5
0.1
0.4
0.3
2.0
1.9
10
20
12
-1
3
−40˚C to +125˚C
−65˚C to +150˚C
2V to 12V
215˚C
220˚C
Units
mV/A
µmho
˚C/W
MHz
200V
%/V
kHz
V/V
mA
µA
nA
µA
µA
%
Ω
2kV
V
A
V
V
V
V
V
JA
,