LM26484SQEV National Semiconductor, LM26484SQEV Datasheet - Page 4

• Manufacturer Part Number: LM26484SQEV
• Description: BOARD EVALUATION FOR LM2684
• Manufacturer: National Semiconductor

Specifications of LM26484SQEV

• Main Purpose: DC/DC, Step Down with LDO
• Outputs And Type: 3, Non-Isolated
• Voltage - Output: 1V, 1.8V, 1V
• Current - Output: 2A, 2A, 1A
• Voltage - Input: 3 ~ 5.5V
• Regulator Topology: Buck
• Frequency - Switching: 2MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM26484
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

www.national.com
V
T
C
I
V
V
V
PSRR
T
C
C
q
SD
ON
IN
IN
OUT
FB
IN
FB
OUT
Absolute Maximum Ratings
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
General Electrical Characteristics
Typical values and limits appearing in normal type apply for T
junction temperature range for operation, −40°C to +125°C.
LDO Controller
Unless otherwise noted, AVDD = AVIN 3.3V, PVIN = 1.8V. Typical values and limits appearing in normal type apply for T
C. Limits appearing in boldface type apply over the entire junction temperature range for operation, −40°C to +125°C.
Note
VIN1, VIN2, AVDD, AVIN
nPOR, ENSW1, FB1, ENSW2, FB2,
ENLDO, LDO_FB
GND to GND SLUG
Junction Temperature (T
Storage Temperature Range
Maximum Lead Temperature (Soldering)
ESD Ratings
Symbol
Symbol
Human Body Model
Machine Model:
7)
VIN1,2; SW1,2 PGND1,2
All other pins
Operational Voltage Range
Thermal Shutdown
Input Capacitor
Quiescent Current “Off”
Operational Voltage Range
NMOS configuration
Feedback Voltage Accuracy
Power Supply Ripple Rejection
Turn On Time
Feedback Capacitor
Output Capacitor
C10,
(Note
J-MAX
Parameter
(Note
1)
Parameter
)
4)
−0.3 to VIN + 0.3V
−65°C to +150°C
−0.3V to +6V
(Note
AVDD, AVIN
(Note
C9 (Typ App Circuit)
VIN = 3.3V,
ENSW1, ENSW2, ENLDO = 0
1,
150°C
260°C
±0.3V
150V
200V
2 kV
Note
AVIN LDO internal circuits
Externally configured
F = 10 kHz, Load Current = I
Start up from shut-down
C11 (Typ. App. Circuit)
Capacitance for stability:
−40°C
ESR (Equivalent Series
Resistance)
3)
(Note
J
= 25°C. Limits appearing in boldface type apply over the entire
4
≤
Conditions
T
2,
Conditions
J
Operating Ratings
Thermal Properties
VIN1, VIN2, AVDD, AVIN
nPOR, ENSW1, ENSW2, ENLDO,
LDO_GATE, SW1, SW2
FB1, FB2
LDOFB
Power Dissipation (P
T
Junction Temperature (T
(Note
Junction-to-Ambient
Thermal Resistance
(θ
Junction-to-Case
Thermal Resistance (θ
Note
≤
A
JA
125°C
= 85°C, T
)
7)
3)
MAX
MAX
= 125°C
D-MAX
JC
Min
−1.5
J
)
Min
3.0
3.0
0.8
−2
) Range
10
)
(Note
0.03
Typ
Typ
−30
160
500
3.3
3.3
0.5
0.5
10
12
22
33.1°C/W based on a
VBuck2 respectively
5,
0v to VBuck1 and
4-layer 1 oz. PCB
−40°C to +125°C
Note
0V to V
Max
Max
5.5
5.5
1.5
1.5
3.0V to 5.5V
1
2
6)
0v to V
IN
(Note
4.3°C/W
A
+ 0.3V
= 25°
1.2W
Units
Units
µsec
LDO
2,
dB
°C
µF
µA
pF
µF
%
Ω
V
V
V
V