LTC3559-1_15 Datasheet, PDF (10/24 Pages) Linear Technology – Linear USB Battery Charger with Dual Buck Regulators

LTC3559/LTC3559-1
BLOCK DIAGRAM
16
V_CC
CHRG
15
HPWR
12
SUSP
11
NTC
13
V_IN
BAT
BODY
MAXER
1x 800x
LOGIC
CA
NTCA
NTC REF
TA
T_DIE
BATTERY CHARGER
MODE
3
EN1
5
EN2
9
FB1
4
UNDERVOLTAGE
LOCKOUT
OT
DIE
TEMPERATURE
T_DIE
BANDGAP
V_REF
OSCILLATOR
2.25MHz
CLK
FB2
10
V_FB –
G_m
+
0.8V
CLK
V_C
EN MODE
CONTROL
LOGIC
BUCK REGULATOR 1
V_FB –
CLK
V_C
G_m
+
0.8V
GND
EXPOSED PAD
1
17
EN MODE
CONTROL
LOGIC
BUCK REGULATOR 2
BAT
2
PROG
14
PV_IN
7
SW1
6
SW2
8
3559 BD
3559fb
10