LM26480SQ-AA/NOPB National Semiconductor, LM26480SQ-AA/NOPB Datasheet - Page 6

• Manufacturer Part Number: LM26480SQ-AA/NOPB
• Description: IC REG BUCK/LDO DUAL 1.5A 24LLP
• Manufacturer: National Semiconductor

Specifications of LM26480SQ-AA/NOPB

• Applications: Processor
• Voltage - Supply: 2.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-LLP
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 24
• Mounting: Surface Mount
• Package Type: LLP EP
• Case Length: 4mm
• Screening Level: Industrial
• For Use With: LM26480SQ-AAEV - BOARD EVALUATION LM26480SQ-AA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: Compliant
• Other names: LM26480SQ-AATR

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C
V
V
Eff
I
f
I
I
R
R
T
C
C
V
V
nPOR
nPOR
Threshold
V
SHDN
OSC
PEAK
q
ON
FB
OUT
IL
IH
OL
OUT
DSON
DSON
IN
O
Buck Converters SW1, SW2
Unless otherwise noted, V
apply for T
+125°C.
I/O Electrical Characteristics
Unless otherwise noted: Typical values and limits appearing in normal type apply for T
type apply over the entire junction temperature range for operation, T
Power On Reset Threshold/Function (POR)
Symbol
Symbol
Symbol
Symbol
(Note
(P)
(N)
14)
((Note
J
= 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation, −40°C to
Parameter
nPOR = Power on reset for Buck1 and
Buck2
Percentage of Target voltage Buck1 or
Buck2
Output Level Low
Feedback Voltage
Line Regulation
Load Regulation
Efficiency
Shutdown Supply Current
Internal Oscillator Frequency
Buck1 Peak Switching Current Limit
Buck2 Peak Switching Current Limit
Quiescent Current “On”
Pin-Pin Resistance PFET
Pin-Pin Resistance NFET
Turn On Time
Input Capacitor
Output Capacitor
Output Capacitor
2,
Note
7,
Input High Level
Input Low Level
IN
Note
Parameter
Parameter
= 3.6V, C
Parameter
8,
Note
IN
9,
= 10 µF, C
Note
11,
OUT
Note
2.8 < V
I
100 mA < I
Load Current = 250 mA
EN is de-asserted
Default oscillator frequency = 2.0
MHz
Default oscillator frequency = 2.1
MHz
No load PFM Mode
No load PWM Mode (Forced PWM)
Start up from shut-down
Capacitance for stability
Capacitance for stability
= 10 µF, L
Default = 60 mS
Default = 100 µS
V
V
Load = I
O
BUCK1
BUCK1
Capacitance for stability
0°C
−40°C
ESR (Equivalent Series
Resistance)
14)
=10 mA
≤
IN
AND V
OR V
OL
T
6
≤
< 5.5
J
OUT
Conditions
O
T
= 500 µA
Conditions
≤
Conditions
Conditions
J
< I
BUCK2
125°C
≤
= 2.2 µH. Typical values and limits appearing in normal type
BUCK2
J
MAX
125°C
= 0°C to +125°C.
falling
rising
J
= 25°C. Limits appearing in boldface
0.7*VDD
0.33
0.68
Min
Min
1.6
1.7
Min
−3
10
10
5
Min
Limit
0.0013
0.089
0.01
Typ
0.23
0.47
200
180
500
Typ
Typ
100
2.0
2.1
2.0
2.0
1.0
96
33
60
92
82
2
Max
0.4
Max
Max
0.5
400
400
Max
2.4
2.5
2.4
2.4
500
+3
1
Units
%/mA
Units
Units
Units
µsec
MHz
%/V
V
V
mS
mΩ
mΩ
mΩ
mA
µS
µA
µA
µF
µF
%
µF
µF
%
%
V
A