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参数资料
| 型号： | FAN5702UC20X |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 6/18页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR 6LED 20MA I2C 16WLCSP |
| 标准包装： | 1 |
| 拓扑： | PWM，切换式电容器（充电泵） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 900kHz ~ 1.5MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 输出电压： | 2 V ~ 4 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-UFBGA，WLCSP |
| 供应商设备封装： | 16-WLCSP |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 其它名称： | FAN5702UC20XDKR |
Electrical Specifications
Unless otherwise specified: V IN = 2.7V to 5.5V; T A = -40 ? C to +85 ? C; and ENA, EN3, EN4, EN5, and EN6 = 1. Typical values are
V IN = 3.6V, T A = 25 ? C, I LED = 20mA, and LED cathode terminals = 0.4V. Circuit and components are according to Figure 1.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
Power Supplies and Thermal Protection
I Q
Quiescent Supply Current
1.5x Mode, No LEDs
1x Mode, No LEDs
4.4
0.3
mA
mA
I SD
Shutdown Supply Current
EN = 0, V IN = 4.5V, T A = -40 ? C to +85 ? C
0.1
2.0
? A
V UVLO
Under-Voltage Lockout
Threshold
V IN Rising
V IN Falling
2.20
2.55
2.40
2.70
V ?
V ?
V UVHYST
T LIMIT
T HYST
Under-Voltage Lockout
Hysteresis
Thermal Shutdown
Thermal Shutdown Hysteresis
150
150
20
mV
°C
°C
LED Curren t Sinks
LED Current Matching
I LED
I LED(MAX)
I LED_MATCH
V DTH
V HR
Absolute Current Accuracy
(3)
Maximum Diode Current
(4)
1x to 1.5x Gain Transition
Threshold
(5)
Current Sink Headroom
V CATHODE = 0.4V; see options for I SET
I LED = I SET
V CATHODE = 0.4V, I LED = I SET
LED Cathode Voltage Falling
I LED = 90% I LED(NOMINAL)
– 10%
I SET
30
0.4
100
65
+10%
3.0
mA ?
mA ?
%
mV
mV
PWM Dimming
f PWM
PWM Switching Frequency
t ON_LED(MINIMUM) = 15μs
20
kHz
D PWM
PWM Duty-Cycle
f PWM = 100Hz
0.15
100.00
%
Charge Pump
R OUT
Output Resistance
1.5x Mode
1x Mode
2.4
0.9
Ω
Ω
f SW
t START
Switching Frequency
Startup Time
V OUT = 90% of V IN
0.9
1.2
250
1.5
MHz
? s
Logic Input s (EN, SDA, SCL)
V IH
V IL
HIGH-Level Input Voltage
LOW-Level Input Voltage
1.2
0.4
V
V
V IMAX
Maximum Input Voltage
1.8
5.5
V ?
I IN
Input Bias Current
Input Tied to GND or V IN
0.01
1.00
? A
Notes:
3.
4.
5.
The maximum total output current for the IC should be limited to 180mA. The total output current can be split between the
two groups (IDxA = IDxB = 30mA maximum). Under maximum output current conditions, special attention must be given
to input voltage and LED forward voltage to ensure proper current regulation. See the Maximum Output Current section of
the datasheet for more information.
For the two groups of current sinks on a part (group A and group B), the following are determined: the maximum sink
current in the group (MAX), the minimum sink current in the group (MIN), and the average sink current of the group (AVG).
For each group, two matching numbers are calculated: (MAX-AVG)/AVG and (AVG-MIN)/AVG. The largest number of the
two (worst case) is considered the matching value for the group. The matching value for a given part is considered to be
the highest matching value of the two groups. The typical specification provided is the most likely norm of the matching
value for all parts.
For each Dxx pin, headroom voltage is the voltage across the internal current sink connected to that pin. V HRx = V OUT -
V LED . If headroom voltage requirement is not met, LED current regulation is compromised.
? 2010 Fairchild Semiconductor Corporation
FAN5702 ? Rev. 1.0.4
6
www.fairchildsemi.com
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