LT3473EDD#PBF Linear Technology, LT3473EDD#PBF Datasheet - Page 6

• Manufacturer Part Number: LT3473EDD#PBF
• Description: IC CONV DC/DC 1A 8-DFN
• Manufacturer: Linear Technology
• Type: Step-Up (Boost)r

Specifications of LT3473EDD#PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: Adj to 34V
• Current - Output: 1A
• Frequency - Switching: 1.2MHz
• Voltage - Input: 2.2 ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-DFN
• Power - Output: 80mA
• Primary Input Voltage: 16V
• No. Of Outputs: 1
• Output Voltage: 34V
• Output Current: 1.2A
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Dc To Dc Converter Type: Step Up
• Pin Count: 8
• Input Voltage: 16V
• Switching Freq: 1400KHz
• Package Type: DFN EP
• Switching Regulator: Yes
• Line Regulation: 0.01%/V
• Mounting: Surface Mount
• Input Voltage (min): 2.2V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

BLOCK DIAGRA
LT3473/LT3473A
6
13
7
8
9
4
3
5
9
100mV
100mV
FB
CTRL
PGOOD
GND
FB
CTRL
PGOOD
GND
Q5
Q5
+
+
+
+
A4
A4
–
–
W
–
–
–
+
+
–
+
+
1.25V
g
1.25V
g
V
V
m
m
REF
REF
AMPLIFIER
AMPLIFIER
ERROR
ERROR
GENERATOR
GENERATOR
Figure 2. LT3473A Block Diagram
Figure 1. LT3473 Block Diagram
RAMP
RAMP
Σ
Σ
–
+
–
+
V
V
11
7
IN
IN
BTH
A2
COMPARATOR
A2
COMPARATOR
BTH
V
V
C
C
SHDN
POWER SECTION
SHDN
POWER SECTION
10
6
+
–
+
–
OSCILLATOR
OSCILLATOR
A1
A1
1.2MHz
R
1.2MHz
R
S
S
Q
Q
ENABLE
ENABLE
A3
A3
DRIVER
DRIVER
–
+
–
+
12
8
Q1
Q1
SW
SW
DRIVER
DRIVER
PNP
PNP
Q3
Q4
Q2
Q2
OUT
CAP
NB1
NE1
NB2
NE2
OUT
CAP
3437 F02
3437 F01
1
2
3
4
5
6
1
2
3473f