Datasheet

MAX8662/MAX8663
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (Output Regulator) (continued)
(V
SYS_
= V
PV_
= V
IN45
= V
IN67
= 4.0V, V
BRT
= 1.25V, circuit of Figure 1, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
FB Regulation Accuracy
From V
FB1
= 0.98V, I
OUT1
=
0 to 1200mA,
V
OUT1
=
0.98V to 3.3V
-3 +3 %
FB1 Input Leakage Current
0.01 0.10
µA
V
PV1
=
3.3V
0.12 0.24
pMOS On-Resistance I
LX1
=
100mA
V
PV1
=
2.6V
0.15
V
PV1
=
3.3V
0.2 0.4
nMOS On-Resistance I
LX1
=
100mA
V
PV1
=
2.6V
0.3
pMOS Current Limit
1.4 1.8 2.2
A
S ki p M od e Transi ti on C ur r ent 90
mA
nMOS Zero-Cross Current 25
mA
V
LX1
= V
PV1
=
5.5V
0.01 1.00
LX Leakage
V
EN1
=
0V, V
SYS
= 5.5V,
T
A
=
+25°C
V
LX1
= 0V, V
PV1
= 5.5V -5.00 -0.01
µA
Soft-Start Time
400
µs
BUCK REGULATOR 2
V
PWM
= 0V 16 35 µA
Supply Current
I
SYS
+ I
PV2
, no l oad , not
i ncl ud i ng S Y S b i as cur r ent
V
PWM
= 5V
2.1
mA
Output Voltage Range Guaranteed by FB accuracy
0.98 3.30
V
Maximum Output Current
900
mA
FB Regulation Accuracy
From V
FB2
=
0.98V, I
OUT2
=
0 to 600mA,
V
OUT2
= 0.98V to 3.3V
-3 +3 %
FB2 Input Leakage Current
0.01 0.10
µA
V
PV2
=
3.3V
0.2 0.4
pMOS On-Resistance I
LX2
=
100mA
V
PV2
=
2.6V
0.3
V
PV2
=
3.3V
0.2 0.4
nMOS On- Resistance I
LX2
=
100mA
V
PV2
=
2.6V
0.3
pMOS Current Limit
1.07 1.30 1.55
A
S ki p M od e Transi ti on C ur r ent 90
mA
nMOS Zero-Cross Current 25
mA
V
LX2
= V
PV2
= 5.5V
0.01 1.00
LX Leakage
V
EN2
=
0V, V
SYS
= 5.5V,
T
A
=
+25°C
V
LX2
= 0V, V
PV2
= 5.5V -5.00 -0.01
µA
Soft-Start Time
400
µs
BOOST REGULATOR FOR LED DRIVER
Supply Current
At S Y S , no l oad , not
i ncl ud i ng S Y S b i as cur r ent
Switching 1
mA
Output Range V
OUT3
V
SYS
30 V
Minimum Duty Cycle D
MIN
10 %
Maximum Duty Cycle D
MAX
90
92 %
CS Regulation Voltage V
CS
0.29 0.32 0.35
V
OVP Regulation Voltage Duty = 90%, I
LX3
=
0mA
1.225 1.250 1.275
V
OVP Sink Current
19.2 20.0 20.8
µA
OVP Soft-Start Period Time for I
OVP
to ramp from 0 to 20µA (Note 5)
1.25
ms