LT1777CS Linear Technology, LT1777CS Datasheet - Page 7

• Manufacturer Part Number: LT1777CS
• Description: IC SWREG STP-DWN LOWNOISE 16SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1777CS

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.24 ~ 30 V
• Current - Output: 700mA
• Frequency - Switching: 100kHz
• Voltage - Input: 12 ~ 48 V
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

BLOCK DIAGRA
OUTPUT STAGE SI PLIFIED SCHE ATIC
12
14
13
4
3
7
V
FB
V
SHDN
SYNC
SGND
C
CC
V
OSC
BG
W
BIAS
Q6
I
1
W
I
g
Q2
m
V
FEEDBACK
BG
SWITCH ON
SIGNAL
LOGIC
AMP
V
B
R1
C1
SWDR
SWON
Q3
R2
Q5
Q4
W
I
R1
I
2
Q1
R3
R4
I
COMP
V
V
SW
D
V
IN
L
SENSE
1777 SS
I
I
1
NOTE: R3 = R4
Q2
L
MAIN
LIMITER
LIMITER
– dV/dt
dI/dt
+
1777 BD
V
OUT
Q1
R
SENSE
V
V
SW
V
IN
D
10
6
5
LT1777
7