參數(shù)資料
型號(hào)： LM26480SQX-BF/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： 2.4 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, QCC24
封裝： 4 X 4 MM, 0.80 MM HEIGHT, LLP-24
文件頁(yè)數(shù)： 26/30頁(yè)
文件大小： 2447K
代理商： LM26480SQX-BF/NOPB
Absolute Maximum Ratings (Note 1, Note
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VINLDO12, VIN1, AVDD, VIN2,
VINLDO1, VINLDO2, ENSW1,
FB1, FB2, ENSW2, ENLDO1,
ENLDO2, SYNC, FBL1, FBL2
0.3V to +6V
GND to GND SLUG
±0.3V
Power Dissipation (P
D_MAX)
(T
A=85°C, TMAX=125°C )
1.17W
Junction Temperature (T
J-MAX)
150°C
Storage Temperature Range
65°C to +150°C
Maximum Lead Temperature (Soldering)
260°C
ESD Ratings
Human Body Model (Note
2 kV
Operating Ratings: Bucks (Note 1, Note
V
IN
2.8V to 5.5V
V
EN
0 to (V
IN + 0.3V)
Junction Temperature (T
J) Range
–40°C to +125°C
Ambient Temperature (T
A) Range
40°C to +85°C
Thermal Properties (Note 3, Note 5, Note 6)
Junction-to-Ambient Thermal
Resistance (
θ
JA) SQA024AG
34.1°C/W
General Electrical Characteristics (Note 1, Note 2, Note 7, Note 13, Note 16)
Unless otherwise noted, V
IN = 3.6V. Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in
boldface type
apply over the entire junction temperature range for operation, 40°C to +125°C.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
I
Q
VINLDO12 Shutdown Current
V
IN = 3.6V
0.5
A
V
POR
Power-On Reset Threshold
V
DD Falling Edge(Note 16)
1.9
V
T
SD
Thermal Shutdown Threshold
160
°C
T
SDH
Themal Shutdown Hysteresis
20
°C
UVLO
Under Voltage Lock Out
Rising
2.9
V
Failing
2.7
V
Low Drop Out Regulators, LDO1 and LDO2
Unless otherwise noted, V
IN = 3.6V, CIN = 1.0 F, COUT = 0.47 F. Typical values and limits appearing in normal type apply for
T
J = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation, 40°C to +125°C.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
IN
Operational Voltage Range
VINLDO1 and VINLDO2 PMOS
pins (Note 15)
1.74
5.5
V
FB
FB Voltage Accuracy
3
%
ΔV
OUT
Line Regulation
V
IN = (VOUT + 0.3V) to 5.0V
(Note 12) Load Current = 1 mA
0.15
%/V
Load Regulation
V
IN = 3.6V,
Load Current = 1 mA to I
MAX
0.011
%/mA
I
SC
Short Circuit Current Limit
LDO1-2, V
OUT = 0V
500
mA
V
IN – VOUT
Dropout Voltage
Load Current = 50 mA
25
200
mV
PSRR
Power Supply Ripple Rejection
F = 10 kHz, Load Current = I
MAX
45
dB
θn
Supply Output Noise
10 Hz < F < 100 kHz
150
Vrms
I
Q
Quiescent Current “On”
I
OUT = 0 mA
40
150
A
Quiescent Current “On”
I
OUT = 300 mA
60
200
A
Quiescent Current “Off”
EN is de-asserted
0.03
1
A
T
ON
Turn On Time
Start up from shut-down
300
sec
5
www.national.com
LM26480
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