LTM4676_15 Datasheet, PDF (68/78 Pages) Linear Technology – Dual 13A or Single 26A Module Regulator with Digital Power System Management

LTM4676
Typical Applications
V_IN
4.5V to 5.75V
+ _CINL
220µF
C_INH
22µF
×3
10k
×7
SMBus INTERFACE WITH
PMBus COMMAND SET
ON/OFF CONTROL, FAULT
MANAGEMENT, POWER
SEQUENCING
PWM CLOCK SYNCH.
TIME BASE SYNCH.
• SLAVE ADDRESS = 1001010_R/W (0X4A)
• 350kHz SWITCHING FREQUENCY
• NO GUI CONFIGURATION AND
NO PART-SPECIFIC PROGRAMMING REQUIRED EXCEPT:
VIN_OFF < VIN_UV_WARN_LIMIT < VIN_ON < 4.3V
IN MULTI-MODULE SYSTEMS, CONFIGURING RAIL_ADDRESS
IS RECOMMENDED
V_IN0
V_IN1
SV_IN
V_DD33
SCL
SDA
ALERT
RUN₀
RUN₁
GPIO₀
GPIO₁
SYNC
SHARE_CLK
WP
LTM4676
V_OUT0
TSNS_0a
VVTIIVVII_OOSSSS^SOO_SSNNNN^NRR_NNSSSS^SBB_SS0000^{000bb00aa+–+–b+–+–}
V_ORB1
V_OUT1
TSNS_1a
TIIII_SSSSS_NNNNN_SSSSS_{11111bbaa+–b+–}
V_OSNS1
SGND
4676 F35
10.7k
1%
±50ppm/°C
22.6k
1%
±50ppm/°C
2.1k
1%
±50ppm/°C
C_OUT
100µF
×14
V_OUT, 1.5V
ADJUSTABLE
UP TO 26A
LOAD
Figure 35. 26A, 1.5V Output DC/DC µModule Regulator with I²C/SMBus/PMBus Serial Interface
14
12
10
8
I_OUT1
6
I_OUT0
4
2
0
–2
04
8 12 16 20 24 28
TOTAL OUTPUT CURRENT (A)
4676 F36a
(36a) 5V_IN, Figure 35 Circuit
14
12
10
I_OUT1
8
I_OUT0
6
4
2
0
–2
04
8 12 16 20 24 28
TOTAL OUTPUT CURRENT (A)
4676 F36b
(36b) 12V_IN, Figure 35 Circuit with INTV_CC Open
and V_OUT Commanded to 1V
Figure 36. Current Sharing Performance of the LTM4676's Channels
4676fc
68
For more information www.linear.com/LTM4676