Diodes PAM2861 - Manual (Page 4)

PAM2861
Document number: DSxxxxx Rev. 1 - 1
4 of 12
www.diodes.com
July 2013
© Diodes Incorporated
PAM2861
A Product Line of
Diodes Incorporated
Thermal Information
Parameter Package Symbol Max Unit
Thermal Resistance (Junction to Ambient)
TSOT25
θ
JA
250
°C/W
SOT89-5 160
Thermal Resistance (Junction to Case)
TSOT25
θ
JC
130
SOT89-5 45
Electrical Characteristics
(@T
A
= +25°C, V
IN
= 16V, unless otherwise specified.)
Parameter Symbol Test Conditions Min Typ Max Units
Input Voltage V
IN
6 40 V
Output Current I
LED
R
S
= 0.3 Ω 333 mA
R
S
= 0.1 Ω 1 A
Shutdown Current I
SD
VSET Pin Grouded 20 40 µA
Quiescent Current without Switching I
Q
VSET Pin Floating, V
IN
= 16V 0.6 mA
Mean Current Sense Threshold Voltage V
SENSE
Measured on I
SENSE
Pin with
Respect to V IN
95 100 105 mV
Sense Threshold Hysteresis V SENSE_HYS
±13 %
ISENSE Pin Input Current I SENSE V SENSE = V IN -0.1 8 µA
VSET Range on VSET Pin V EN
For DC Dimming 0.3 2.5 V
DC Voltage on VSET Pin to Enable V EN(ON) V EN Rising 0.25 V
DC Voltage on VSET Pin to Disable V EN(OFF) V EN Falling 0.2 V
LX Switch On Resistance R
LX
@I
LX
= 100mA 0.3 Ω
LX Switch Leakage Current I
LX(LEAK)
5 µA
Soft Start Time T
SS
V
IN
= 16V, C
EN
= 1nF 1.5 ms
Operating Frequency F LX
V
I
= 16V, V
O
= 9.6V (3 LEDs)
L = 47µF, ΔI = 0.25A (I
LED = 1A)
233 kHz
Recommended Minimum Switch ON Time T
ON_REC
For 4% Accuracy 500 Ns
Recommended Maximum Switch Frequency F
LX(MAX)
1.0 MHz
Max Duty Circle 98 %
Recommended Duty Cycle Range D
LX
25 75 %
Internal Comparator Propagation Delay T
PD
(Note 1) 45 ns
Over Temperature Protection T
OTP
150 °C
Temp Protection Hysteresis T
OTP_HYS
40 °C
Current Limit I
XL(MAX)
Peak Inductor Current 1.5 A
Note: 1. Parameters are not tested at production, but guaranteed by design. V
SENSE
: level A: 95mV to 100mV; level B: 100mV to 105mV.