LM3370SD-3416/NOPB National Semiconductor, LM3370SD-3416/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM3370SD-3416/NOPB
• Description: IC CONV DC/DC DUAL STPDN 16-LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: Step-Down (Buck)r

Specifications of LM3370SD-3416/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 1.4V, 2.8V
• Current - Output: 600mA
• Frequency - Switching: 2MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -30°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-LLP
• Power - Output: 1.54W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM3370SD-3416TR

Package Marking Information
Pin Descriptions (LLP)
Pin #
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
FIGURE 3. Top Marking
16-Lead LLP Package
PGND2
PGND1
nPOR1
nPOR2
SGND
Name
SW2
SW1
SDA
SCL
EN1
EN2
V
V
V
FB1
FB2
IN2
DD
IN1
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Power supply voltage input to PFET and NFET switches for Buck 2
Buck 2 Switch Pin
Buck 2 Power Ground
Signal supply voltage input, V
Signal GND
Buck 1 Power Ground
Buck 1 Switch Pin
Power supply voltage input to PFET and NFET switches for Buck 1
Analog Feedback Input for Buck 1
I
I
Power ON Reset for Buck 1, Open drain output Low when Buck 1 output is 92% of target
output. A 100 kΩ pull up resistor is required
Power ON Reset for Buck 2, Open drain output Low when Buck 2 output is 92% of target
output. A 100 kΩ pull up resistor is required
Buck 1 Enable
Buck 2 Enable
Analog feedback for Buck 2
2
2
C Compatible Data, a 2 kΩ pull up resistor is required
C Compatible Clock, a 2 kΩ pull up resistor is required
3
DD
must be equal or greater of the two inputs (V
Description
FIGURE 4. Top View
20167342
www.national.com
IN1
& V
IN2
)