LTC3815_15 Datasheet, PDF (12/42 Pages) Linear Technology – 6A Monolithic Synchronous DC/DC Step-Down Converter with Digital Power System Management

LTC3815
Block Diagram
REF
R_REF
R_UV/OV
PGLIM
+
∆V
–
SDA
SCL
ALERT
WP
ASEL
MARGIN
C_SLEW
CLKOUT
R_T
MODE/SYNC
RUN_STBY
TRACK/SS
C_SS
PGFD
PGOOD
100µA
+
+
0.4
±25%
REF +
+
+
–
DAC
TO EA
REF+∆V/2.5 _–
PPG
+
REF–∆V/2.5
+
NPG
–
10µA
PGOOD
FILTER
PMBus
INTERFACE
10µA
RAM/
COUNTER
FAULT
STATUS
ON/OFF
REF+∆V/2.5
A/D
MUX
+
OVP
–
FORCED
CONTINUOUS
IREV
LOGIC
TG ON
+–
0.4V
ICMP
OSC
Q_T
Q_B
CURRENT
SENSE
I_IN, I_OUT
PV_IN
PV_IN
+
C_IN
V_IN
V_IN
+
C_IN
L
SW
PGND
V_IN
2.5µA
+
1.0V –
REF
5µA
1k
OFF
PLL
SYNC
I_TON
V_IN
PWM ON/OFF
+
6A
+ EA
–
–6A
V_ON
OST
t_ON
=
V_ON
I_TON
(0.64pF)
S
Q
R
TEMPERATURE ^TEMP
SENSE
CHIP ON/OFF
80k
DA_OUT
80k
DAMP
80k
80k
SGND
FB
R_C1
I_TH
C_C1
DA_OUT
RUN_MSTR
1.0V
V_{CC_SENSE}
V_{SS_SENSE}
3815 BD
R_C2
C_C2
R_C3
C_C3
V_OUT
+
C_OUT
3815p
12
For more information www.linear.com/LTC3815