LM3207TL-2.53 National Semiconductor, LM3207TL-2.53 Datasheet - Page 5

• Manufacturer Part Number: LM3207TL-2.53
• Description: LM3207 650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers with Integrated Vref LDO; Package: MICRO SMD; No of Pins: 9; Qty per Container: 250; Container: Reel
• Manufacturer: National Semiconductor

Symbol
LDO
PSRR
V
t
t
Switcher
T
time)
T
time)
C
V
T
η
V
Line_tr
Load_tr
LDO, ON
LDO, OFF
RESPONSE
RESPONSE
_ON
LDO(NOISE)
CON
O_ripple
CON
System Characteristics
values in the typical application circuit are used (L = 3.0µH, (DCR = 0.12Ω, FDK MIPW3226D3R0M);
C
0402, TDK C1005X5R1A104KT) (or 220nF, (6.3V, 0402, TDK C1005X5R0J224KT))) . These parameters are not guaranteed
by production testing. Min and Max values are specified over the V
T
specified.
Note 1: 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 2: All voltages are with respect to the potential at the GND pins. The LM3207 is designed for mobile phone applications where turn-on after power-up is
controlled by the system controller and where requirements for a small package size overrule increased die size for internal Under Voltage Lock-Out (UVLO)
circuitry. Thus, it should be kept in shutdown by holding the EN pin low until the input voltage exceeds 2.7V.
Note 3: Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at T
= 130°C (typ.).
A
IN
= −30°C to 85°C unless otherwise specified. Typical values are specified at PV
Linearity
= 10µF, (6.3V, 0805, TDK C2012X5R0J106K); C
(Rise
(Fall
Parameter
Power Supply Rejection
Ratio
Output Noise Voltage
Time to reach 90% of
V
signal goes high.
Time to reach 10% of
V
signal goes low.
Time for V
0.8V to 3.6V
Time for V
3.6V to 0.8V
V
Linearity in control
range 0.32V to 1.44V
Turn on time
(time for output to reach
3.6V from Enable low to
high transition)
Efficiency
(L = 3.0µH, DCR
100mΩ)
Ripple voltage, PWM
mode
Line transient response
Load transient response PV
LDO(nom)
LDO(nom)
CON
input capacitance
after EN
after EN
OUT
OUT
to rise from
to fall from
≤
LDO
LDO
The following spec table entries are guaranteed by design providing the component
Conditions
Offset Freq = 1Khz, C
I
BW = 10Hz to 100Khz, I
C
fully functional before EN
PV
C
fully functional before EN
PV
C
(Note 12)
C
(Note 12)
PV
R
PV
R
V
Test frequency = 100 kHz
PV
EN = Low to High, PV
V
I
PV
PV
PV
I
PV
T
I
transients up to 100mA,
T
out
OUT
OUT
OUT
RISE
RISE
CON
O
LDO
LDO
LDO
LDO
LOAD
LOAD
in
in
IN
IN
IN
IN
IN
IN
IN
IN
= 3.6V, C
= 1mA, PV
≤
= 10mA to 400mA, (Note 11)
= 100mA
= 3V, R
= 3V, R
= 4.2V, C
= 4.2V, C
= 3.9V, Monotonic in nature
= 3.6V, V
= 3.9V, V
= 3V to 4.5V, V
= 600mV perturbance,
= 3.1/3.6/4.5V, V
= 100nF, PWM mode assumed to be
= 220nF, PWM mode assumed to be
= 100nF, PV
= 220nF, PV
= 1V,
= T
= T
= 5.5Ω
= 10Ω
1mA
FALL
FALL
OUT
LOAD
LOAD
OUT
= 10µs, V
= 10µs
= 4.7µF, (6.3V, 0603, TDK C1608X5R0J475M); C
in
OUT
OUT
OUT
OUT
= Vout
= 4.7µF,
= 562 Ω (Note 12)
= 562 Ω (Note 12)
in
in
= 0.8V, I
= 3.4V, I
= 4.7uF, L = 3.0uH,
= 4.7uF, L = 3.0uH,
= 3V, Iout = 0mA
= 3V, Iout = 0mA
OUT
5
out
IN
OUT
(nom)
OUT
out
= 4.2V,
= 0.8V,
= 100nF,
LDO
LDO
IN
= 0.8V,
= 1mA
OUT
OUT
= 0.8V,
+ 0.5V
range = 2.7V to 5.5V and over the ambient temp range
goes high.
goes high.
= 90mA
= 400mA
IN
= EN = 3.6V and T
Min
-3
Typ
50
30
20
20
70
81
95
10
50
50
J
= 150°C (typ.) and disengages at T
A
Max
= 25°C unless otherwise
100
LDO
30
30
20
+3
3
5
3
5
= 100nF, (10V,
Units
www.national.com
uVrms
mVp-p
mV
mV
dB
uS
uS
uS
pF
µs
µs
µs
%
%
%
J