LM3370SD-3021EV National Semiconductor, LM3370SD-3021EV Datasheet - Page 2

• Manufacturer Part Number: LM3370SD-3021EV
• Description: BOARD EVALUATION LM3370SD-3021
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM3370SD-3021EV

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 1.2V, 3.3V
• Current - Output: 600mA, 600mA
• Voltage - Input: 2.7 ~ 5.5V
• Regulator Topology: Buck
• Frequency - Switching: 2MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM3370
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -

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Package Marking Information
Pin Descriptions (LLP)
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
FIGURE 1. Top Marking
16-Lead LLP Package
20175009
PGND2
PGND1
nPOR1
nPOR2
SGND
SW2
SW1
SDA
SCL
EN1
EN2
V
V
FB1
FB2
V
IN2
DD
IN1
2
Power supply voltage input to PFET and NFET switches for
Buck2
Buck 2 Switch pin
Buck 2 Power Ground
Signal supply voltage input, V
the two inputs (V
Signal GND
Buck 1 Power Ground
Buck 1 Switch pin
Power supply voltage input to PFET and NFET switches for
Buck1
Analog feedback input for Buck 1
I
I
Power ON Reset for Buck 1, Open drain output low when
Buck 2 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 input for Buck 2
2
2
C Compatible Data, a 2 kΩ pull up resistor is required
C Compatible Data, a 2 kΩ pull up resistor is required
IN1
FIGURE 2. Top View
or V
IN2
)
DD
must be equal or greater of
20175005