MAX6948B MAXIM [Maxim Integrated Products], MAX6948B Datasheet - Page 3

• Manufacturer Part Number: MAX6948B
• Description: High-Efficiency PWM LED Driver with Boost Converter and Five Constant-Current GPIO Ports
• Manufacturer: MAXIM [Maxim Integrated Products]

Converter and Five Constant-Current GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, V+ = 2.7V to 5.0V, V
V+ = 3.3V, V
Change in Supply Current per
30mA Port
Change in Supply Current per
10mA Port
GPIO PORTS (P0–P4)
Input High Voltage
Input Low Voltage
Input Leakage Current
Input Capacitance
30mA Port Sink Constant Current
(P0, P1)
10mA Port Sink Constant Current
(P2, P3, P4)
Logic Output Low Voltage
30mA Port Sink Constant-Current
Matching (P0, P1)
10mA Port Sink Constant-Current
Matching (P2, P3, P4)
Constant-Current Slew Time
PARAMETER
DD
High-Efficiency PWM LED Driver with Boost
= 2.5V, T
A
= +25NC.) (Note 4)
SYMBOL
DI
DI
I
I
DI
DI
PORT30
PORT10
PORT30
PORT10
V
V
V
DD30
DD10
I
OL1
IH1
IL1
IN
DD
One port set to
30mA constant cur-
rent; all other ports
are digital inputs at
V
One port set to 5mA
constant current
half-current setting;
all other ports are
digital inputs at V
or GND
Port I/O register value set to 0x01
Port I/O register value set to 0x01
Port I/O register
value set to 0x02,
V+ = 3.3V, V
V
(Note 5)
5mA half-current
setting, port I/O
register value set
to 0x02, V+ = 3.3V,
V
to 1.5V (Note 5)
I
0x00
Constant current set
to 30mA, V+ = 3.3V,
T
Constant current set
to 5mA half-current
setting, V+ = 3.3V,
T
20% current to 80% current, port I/O regis-
ter value changed from 0x01 to 0x02
SINK
A
A
DD
LED
EXT
= 1.7V to V+, T
= +25NC (Note 6)
= +25NC (Note 6)
or GND
- V
= 0.5V to 1.5V
= 2mA, port I/O register value set to
LED
EXT
= 0.5V
CONDITIONS
-
DD
A
= T
T
T
T
T
T
T
T
T
V
V
V
MIN
A
A
A
A
A
A
A
A
PORT
PORT
PORT
= +25NC
= T
= +25NC
= T
= +25NC
= T
= +25NC
= T
to T
MIN
MIN
MIN
MIN
= 1V
= 2.75V
= 1V
MAX
to T
to T
to T
to T
, unless otherwise noted. Typical values are at
MAX
MAX
MAX
MAX
(0.7 x
V
MIN
4.4
3.7
27
25
DD
)
±0.03
Q0.7
TYP
0.17
1.3
Q2
10
30
3
5
2
(0.3 x
MAX
V
6.2
1.7
5.6
6.3
0.3
Q1
Q5
Q5
Q5
34
35
DD
7
2
)
UNITS
mA
mA
mA
mA
FA
pF
Fs
%
%
V
V
V
3