参数资料
型号: MAX6948BGWA+T
厂商: Maxim Integrated
文件页数: 3/28页
文件大小: 0K
描述: IC LED DVR PWM GPIO 25WLP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
恒定电流:
拓扑: 开路漏极,PWM,升压(升压)
输出数: 6
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 白色 LED
频率: 2MHz
电源电压: 2.7 V ~ 5 V
输出电压: 28V
安装类型: 表面贴装
封装/外壳: 25-WFBGA,WLCSP
供应商设备封装: 25-WLP(2.09x2.09)
包装: 带卷 (TR)
工作温度: -40°C ~ 105°C
MAX6948B
High-Efficiency PWM LED Driver with Boost
Converter and Five Constant-Current GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)
( Typical Application Circuit , V+ = 2.7V to 5.0V, V DD = 1.7V to V+, T A = T MIN to T MAX , unless otherwise noted. Typical values are at
V+ = 3.3V, V DD = 2.5V, T A = +25 N C.) (Note 4)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Change in Supply Current per
30mA Port
D I DD30
One port set to
30mA constant cur-
rent; all other ports
are digital inputs at
V DD or GND
T A = +25 N C
T A = T MIN to T MAX
3
6.2
7
mA
One port set to 5mA
constant current
T A = +25 N C
1.3
1.7
Change in Supply Current per
10mA Port
D I DD10
half-current setting;
all other ports are
digital inputs at V DD
or GND
T A = T MIN to T MAX
2
mA
GPIO PORTS (P0–P4)
Input High Voltage
Input Low Voltage
V IH1
V IL1
Port I/O register value set to 0x01
Port I/O register value set to 0x01
(0.7 x
V DD )
(0.3 x
V DD )
V
V
Input Leakage Current
Input Capacitance
I IN
±0.03
10
Q 1
F A
pF
30mA Port Sink Constant Current
(P0, P1)
I PORT30
Port I/O register
value set to 0x02,
V+ = 3.3V, V EXT -
V LED = 0.5V to 1.5V
(Note 5)
T A = +25 N C
T A = T MIN to T MAX
27
25
30
34
35
mA
10mA Port Sink Constant Current
(P2, P3, P4)
I PORT10
5mA half-current
setting, port I/O
register value set
to 0x02, V+ = 3.3V,
V EXT - V LED = 0.5V
to 1.5V (Note 5)
T A = +25 N C
T A = T MIN to T MAX
4.4
3.7
5
5.6
6.3
mA
Logic Output Low Voltage
30mA Port Sink Constant-Current
Matching (P0, P1)
V OL1
D I PORT30
I SINK = 2mA, port I/O register value set to
0x00
Constant current set V PORT = 1V
to 30mA, V+ = 3.3V,
T A = +25 N C (Note 6) V PORT = 2.75V
0.17
Q 0.7
0.3
Q 5
Q 5
V
%
Constant current set
10mA Port Sink Constant-Current
Matching (P2, P3, P4)
D I PORT10
to 5mA half-current
setting, V+ = 3.3V,
V PORT = 1V
Q 2
Q 5
%
T A = +25 N C (Note 6)
Constant-Current Slew Time
Maxim Integrated
20% current to 80% current, port I/O regis-
ter value changed from 0x01 to 0x02
2
F s
3
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