ISL6257 Datasheet, PDF (10/22 Pages) Intersil Corporation – Highly Integrated Narrow VDC Battery Charger for Notebook Computers

ISL6257
ACSET
ACPRN
ACLIM
SGATE
+
- ^1.26V
VREF
152kΩ
152kΩ
ADAPTER
CURRENT
LIMIT SET
-
gm3
+
CSIP CSIN
+-
X19.9
CA1
DCSET
+
1.26V -
CSON -
+
DCPRN
LDO
REGULATOR
BGATE
DCIN
VDD
ICOMP
VCOMP
VADJ
CELLS
VREF
MIN
CURRENT
BUFFER
MIN
VOLTAGE
Σ
BUFFER
300kHz
RAMP
-
PWM
+
VREF
514kΩ
514kΩ
gm1
-
2.1V
VOLTAGE
SELECTOR
VDD
REFERENCE
288kΩ
32kΩ
gm2
-
16kΩ
48kΩ
CA2
-^X19.9
+
GND
FB
CSIP CSOP CHLIM
BOOT
UGATE
PHASE
VDDP
LGATE
PGND
1.065V
-
+
EN
FIGURE 19. FUNCTIONAL BLOCK DIAGRAM
10
FN9288.2
January 17, 2007