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参数资料
| 型号： | LM3370TLX-2613/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.4 A DUAL SWITCHING CONTROLLER, 2400 kHz SWITCHING FREQ-MAX, PBGA20 |
| 封装： | 3 X 2 MM, 0.60 MM HEIGHT, 0.50 MM PITCH, , MO-211DG, MICRO, SMD-20 |
| 文件页数： | 23/26页 |
| 文件大小： | 5436K |
| 代理商： | LM3370TLX-2613/NOPB |
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN1 , VIN2 VDD to PGND &
SGND
0.2V to 6V
PGND to SGND
0.2V to +0.2V
SDA, SCL, EN, EN2, nPOR1,
nPOR2, SW1, SW2, FB1 & FB2 (GND - 0.2) to (VIN + 0.2V)
Maximum Continuous Power
Dissipation (P
D_MAX) (Note 3)
Internally Limited
Junction Temperature (T
J-MAX)
125°C
Storage Temperature Range
65°C to +150°C
Maximum Lead Temperature
(Soldering)
ESD Ratings (Note 5)
All Pins
2 kV HBM
200V MM
Input Voltage Range ((Note 10))
2.7V to 5.5V
Recommended Load Current Per
Channel
0 mA to 600 mA
Junction Temperature (T
J) Range
30°C to +125°C
Ambient Temperature (T
A) Range (Note
30°C to +85°C
Thermal Properties (Note 7)
Junction-to-Ambient Thermal Resistance
θ
JA (LLP-16)
26°C/W
θ
JA (20-Bump micro SMD)
50°C/W
Electrical Characteristics (Note 2, Note 8, Note 10) Typical limits appearing in normal type apply for T
J = 25°
C. Limits appearing in boldface type apply over the entire junction temperature range (T
A = TJ = 30°C to +85°C). Unless otherwise
noted, V
IN1 = VIN2 = 3.6V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
FB
Feedback Voltage
3.5
+3.5
%
V
OUT
Line Regulation
2.7V
≤ V
IN ≤ 5.5V
I
O = 10 mA, VOUT = 1.8V
0.031
%/V
Load Regulation
100 mA
≤ I
O ≤ 600 mA
V
IN = 3.6V, VOUT = 1.8V
0.0013
%/mA
I
Q PFM
Quiescent Current “On”
PFM Mode, Both Bucks ON
34
A
I
Q SD
Quiescent Current “Off”
EN1 = EN2 = 0V
0.2
3
A
I
LIM
Peak Switching Current Limit
V
IN = 3.6V
850
1200
1400
mA
R
DS_ON
(LLP)
PFET
V
IN = 3.6V, ISW = 200 mA
390
500
m
NFET
V
IN = 3.6V, ISW = 200 mA
240
350
R
DS_ON
(micro SMD)
PFET
V
IN = 3.6V, ISW = 200 mA
350
400
m
NFET
V
IN = 3.6V, ISW = 200 mA
170
210
F
OSC
Internal Oscillator Frequency
1.5
2.0
2.4
MHz
I
EN
Enable (EN) Input Current
0.01
1
A
V
IL
Enable Logic Low
0.4
V
IH
Enable Logic High
1.0
V
POWER ON RESET THRESHOLD/FUNCTION (POR)
nPOR1 &
nPOR2
Delay Time
nPOR1 = Power ON Reset
for Buck 1
50 mS (default)
50
mS
nPOR2 = Power ON Reset
for Buck 2
Can be pre-trimmd to 50 uS, 100
mS & 200 mS
POR
Threshold
Percentage of Target V
OUT
V
OUT Rising
94
%
V
OUT Falling, 85% (default), Can be
pre-trimmed to 70% or 94%
85
www.national.com
6
LM3370
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| LM3370TL-2613/NOPB | 1.4 A DUAL SWITCHING CONTROLLER, 2400 kHz SWITCHING FREQ-MAX, PBGA20 |
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