ISL6271A Datasheet, PDF (2/16 Pages) Intersil Corporation – Integrated XScale Regulator

Regulator Block Diagram
ISL6271A
LVCC
EN
PVCC
SCL (VID 0)
SDA (VID 1)
VID2
VID3
VIDEN
LDO1
LDO2
I²C
&
STATIC
VID
LOGIC
DAC
SWITCHING
REGULATOR
FIGURE 1. BULVERDE POWER CONTROLLER
VSRAM
(VCC_SRAM)
VPLL
(VCC_PLL)
VOUT
(VCC_VCORE)
Functional Block Diagram
SCL/VID0
SDA/VID1
VID2
VID3
EN
SOFT
C_SS
FB
VIDEN
PGOOD BFLT#
BBAT
VCC 1.1V VSRAM 1.3V VPLL
I²C
OV
UV OT
POR
TEMP
MONITOR
LDO1 AND LDO2
OVERCURRENT
DETECT
DAC
OV
VOUT VCC_CORE
MONITOR UV
+
- _CMP
GATE
DRIVE
LOGIC
ERROR
AMP
+
-
RIPPLE
AMP
+
-
C _RP
GATE
DRIVE
&
ZERO
CURRENT
DETECT
50Ω
R_C C_C
R_COMP
R_RP
GND
RING DAMPING CIRCUIT
VOUT
LVCC
PVCC
C_IN
Lo
PHASE
PGND
1.8V TO 5.5V
2.6V TO 5.5V
VOUT
COUT
FIGURE 2. FUNCTIONAL BLOCK DIAGRAM
2
FN9171.1