lm2706 National Semiconductor Corporation, lm2706 Datasheet - Page 3

• Manufacturer Part Number: lm2706
• Description: Miniature, Variable, Step-down Dc-dc Converter With Bypass For Rf Power Amplifiers
• Manufacturer: National Semiconductor Corporation

V
V
V
V
V
OVP
V
V
I
I
I
I
I
R
R
R
I
I
F
V
V
I
V
V
Z
SHDN
SHDN
SHDN
Q1_PWM
Q2_BYPASS
LIM, PFET
LIM, BYPASS
PIN
IN
FB, MIN
FB, MIN
FB, MAX
FB, MAX
BYPASS−
BYPASS+
OSC
IH
IL
CON,MIN
CON,MAX
CON
DSON(P)
DSON(N)
DSON(BYP)
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 with standard typeface are for T
perature Range of T
Symbol
Supply Voltage, PV
PGND to SGND
EN, FB, BYP, ABD, V
SW
Input Voltage Range (Note 4)
Regulated feedback voltage at
minimum setting
Regulated feedback voltage at
minimum setting
Regulated feedback voltage at
maximum setting
Regulated feedback voltage at
maximum setting
Over-Voltage protection Threshold
Auto Bypass Detection Threshold
Auto Bypass Detection Threshold
Shutdown Supply Current
Shutdown Supply Current
Shutdown Supply Current
DC Bias Current into V
Pin-Pin Resistance for P FET
Pin-Pin Resistance for N FET
Pin-Pin Resistance for Bypass
FET
Switch Peak Current Limit
Bypass FET Peak Current Limit
Internal Oscillator Frequency
Logic High Input, EN, BYP, ABD
Logic Low Input, EN, BYP, ABD
Pin Pull Down Current, EN, BYP,
ABD
V
V
V
V
V
CON
FB,MIN
CON
FB,MAX
CON
Threshold Commanding
Threshold Commanding
Input Resistance
IN
A
, V
CON
= T
Parameter
DD
J
to SGND
= −25˚C to +85˚C. Unless otherwise specified, PV
DD
(SGND −0.2V) to
(PGND −0.2V) to
−0.2V to +0.2V
−0.2V to +6V
(V
(V
A
(Note 1)
= T
DD
DD
PV
V
T
V
V
T
V
V
V
V
EN = ABD = BYP = SW = FB = 0V
T
EN = ABD = BYP = SW = FB = 0V
T
EN = ABD = BYP = SW = FB = 0V
T
FB = 2V, No-Load, V
V
No-Load, V
(Note 8)
(Note 8)
EN, BYP, ABD = 3.6V
PWM Mode, V
PWM Mode, V
A
A
A
A
A
CON
CON
CON
CON
CON
CON
CON
IN
J
IN
+0.2V)
+0.2V)
= 25˚C
= 25˚C
= 25˚C (Note 7)
= 55˚C (Note 7)
= 85˚C (Note 7)
= BYP = 3.6V,
= 25˚C, and those in boldface type apply over the full Operating Tem-
= V
= 0V
= 0V
= 1.70V
= 1.70V
= 0V (Note 5)
= 1.7V (Note 6)
= 1.7V (Note 6)
DD
CON
Conditions
= V
3
CON
CON
IN
= 0V
PV
Storage Temperature Range
Lead Temp. (Soldering, 10 sec)
Junction Temperature (Note 2)
Minimum ESD Rating
(Human Body Model, C = 100 pF, R = 1.5 kΩ)
Thermal Resistance (θ
Swept Down
Swept Up
CON
IN
to V
= 0V
DD
IN
= V
DD
= EN = 3.6V, BYP = ABD = V
1.455
3.185
1.47
3.15
0.55
Min
260
160
310
550
480
500
100
2.7
0.5
1.5
JA
) (Note 3)
1.50
1.50
3.25
3.25
0.45
1.45
Typ
350
275
440
260
200
105
650
650
600
3.6
0.1
1.4
0.6
1.6
6
5
−45˚C to +150˚C
1.545
3.315
−0.2V to +0.2V
Max
1.53
3.35
0.65
445
390
570
500
500
200
750
930
700
5.5
1.8
1.8
1.2
1.7
25
10
1
2
www.national.com
137˚C/W
CON
+125˚C
260˚C
±
2 kV
Units
= 0V.
kHz
mV
mV
mV
mA
mΩ
mΩ
mΩ
mA
mA
µA
µA
µA
µA
kΩ
V
V
V
V
V
V
V
V
V