APW7008 查看數據表（PDF） - Anpec Electronics
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APW7008 Datasheet PDF : 21 Pages
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APW7008
Electrical Characteristics (Cont.)
VIN = 2.85 to 5.5V, CIN = COUT = C1 = C2 = 1µF (ESR = 0.03Ω), ILED = 20mA, TA = -40°C to +85°C, unless otherwise noted. Typical
values are at TA = +25°C.
Symbol
Parameter
Test Conditions
APW7008
Unit
Min.
Typ.
Max.
VIL Logic Pins Low Threshold
-
0.6
0.3
V
IIH Logic Pins High Current
VIH = VIN
-
-
1
µA
IIL Logic Pins Low Current
VIL = GND
-
-
1
µA
Thermal Shutdown
-
150
-
°C
Thermal Shutdown Hysteresis
-
20
-
°C
Note 3: LED current accuracy is defined as: ± (ILED-MEASURED - ILED-SET) / ILED-SET
Note 4: LED current matching is defined as: ± (ILED-MAX - ILED-MIN) / (ILED-MAX + ILED-MIN)
Pin Description
PIN
NO.
NAME
1
EN
2
CTRL0
3
CTRL1
4
CTRL2
FUNCTION
Enable Input Pin. The EN pin is an active high Control. Pull EN pin above 1.3V to enable the device; pull EN
pin below 0.3V to disable the device.
LED On/Off Control Pin. Allow disabling or enabling a combination of LEDs.
5
ISET LED Current Set Input. Connect a resistor from ISET to GND to set the LED current. VISET is typically 1.2V.
6
VOUT Output Voltage Pin. Connect VOUT to the LED anode. Connect a 1µF capacitor from VOUT to GND.
7
VIN
Supply Voltage Input Pin. Connect a 1µF capacitor from VIN to GND.
8
C2+
Bucket Capacitor1 Positive Terminal. Connect a 1µF capacitor from C2+ to C2-.
9
C2-
Bucket Capacitor1 Negative Terminal. Connect a 1µF capacitor from C2+ to C2-.
10
C1+
Bucket Capacitor1 Positive Terminal. Connect a 1µF capacitor from C1+ to C1-.
11
C1-
Bucket Capacitor1 Negative Terminal. Connect a 1µF capacitor from C1+ to C1-.
12
GND Device Ground Pin.
13
ILED4
14
ILED3 LEDs Cathode Connection. The LED current flows from VOUT through LED into ILED_ pin. The charge
15
ILED2 pump regulates the lowest VILED to 180mV. Connect ILED_ pin to VOUT if the LED is not used.
16
ILED1
Copyright © ANPEC Electronics Corp.
4
Rev. A.3 - Feb., 2009
www.anpec.com.tw
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