al8807 Diodes, Inc., al8807 Datasheet - Page 3

• Manufacturer Part Number: al8807
• Description: High Efficiency Low Emi 30v 1a Buck Led Driver
• Manufacturer: Diodes, Inc.

Notes:
Electrical Characteristics
V
AL8807
Document Number: DS35281 Rev. 3 - 2
I
IN
SW_Leakage
Symbol
R
R
=12V, T
V
V
V
V
V
I
DS(on)
Ψ
θ
θ
CTRL
INSU
INSH
TH-H
SET
I
REF
t
I
t
JC
Q
TH
R
JA
S
F
JL
2. AL8807 does not have a low power standby mode but current consumption is reduced when output switch is inhibited: V
3. Refer to figure 32 for the device derating curve.
4. Test condition for SOT25: Device mounted on FR-4 PCB (25mm x 25mm 1oz copper, minimum recommended pad layout on top layer and thermal
5. Test condition for MSOP-8EP: Device mounted on FR-4 PCB (51mm x 51mm 2oz copper, minimum recommended pad layout on top layer and
6. Dominant conduction path via Gnd pin (pin 2).
7. Dominant conduction path via exposed pad.
tested with V
vias to bottom layer ground plane. For better thermal performance, larger copper pad for heat-sink is needed.
thermal vias to bottom layer with maximum area ground plane. For better thermal performance, larger copper pad for heat-sink is needed
A
=25
Internal regulator start up threshold V
Internal regulator hysteresis
threshold
Quiescent current
Input supply Current
Set current Threshold Voltage
Set threshold hysteresis
SET pin input current
CTRL pin input resistance
Internal Reference Voltage
On Resistance of SW MOSFET
SW rise time
SW fall time
Switch leakage current
Thermal Resistance Junction-to-
Ambient (Note 3)
Thermal Resistance Junction-to-
Lead (Note 6)
Thermal Resistance Junction-to-
case (Note 7)
o
C, unless otherwise specified.
CTRL
≤ 2.5V
Parameter
HIGH EFFICIENCY LOW EMI 30V 1A BUCK LED DRIVER
V
Output not switching (Note 2)
CTRL pin floating f = 250kHz
V
Referred to internal reference
I
V
V
V
SOT25 (Note 4)
MSOP-8EP (Note 5)
SOT25 (Note 4)
MSOP-8EP (Note 5)
SW
IN
IN
SET
SENSE
SW
IN
rising
falling
=30V
= 1A
= 0.1V~12V~0.1V C
www.diodes.com
= V
= 100±20mV f
IN
3 of 20
-0.1
Conditions
SW
= 250kHz
L
= 15pF
Min
100
95
Typ.
0.25
100
±20
250
1.8
2.5
4.3
16
50
12
20
69
50
SENSE
Max
300
350
105
5.9
0.4
0.5
22
AL8807
5
© Diodes Incorporated
= 0V. Parameter is
November 2011
°C/W
Unit
mV
mA
mV
mV
µA
µA
kΩ
μA
ns
ns
Ω
V
V