TS51221 Datasheet, PDF (4/18 Pages) Semtech Corporation – High Efficiency Regulator IC for Wireless Power Receiver Applications

Thermal Characteristics
Symbol
Parameter
Value
Θ_JA
Thermal Resistance Junction to Air (Note 1)
34.5
Θ_JC
Thermal Resistance Junction to Case (Note 1)
2.5
T_STG
Storage Temperature Range
-65 to 150
T_{J MAX}
Maximum Junction Temperature
150
T_J
Operating Junction Temperature Range
-40 to 125
Note 1: Assumes 16LD 3x3 QFN with hi-K JEDEC board and 13.5 inch2 of 1 oz Cu and 4 thermal vias connected to PAD
Units
°C/W
°C/W
°C
°C
°C
Recommended Operating Conditions
Symbol
Parameter
Min
Typ
Max Unit
V_CC
Input Operating Voltage
4.5
12
24
V
C_BST
Bootstrap Capacitor
17.6 22
26.4
nF
L_OUT
Output Filter Inductor Typical Value (Note 1)
3.76 4.7
5.64
uH
C_OUT
Output Filter Capacitor Typical Value (Note 2)
33
44 (2 x 22)
uF
C_OUT-ESR
Output Filter Capacitor ESR
2
100
mΩ
C_BYPASS
Input Supply Bypass Capacitor Typical Value (Note 3)
8
10
uF
Note 1: For best performance, an inductor with a saturation current rating higher than the maximum V_OUT load requirement plus the inductor
current ripple.
Note 2: For best performance, a low ESR ceramic capacitor should be used.
Note 3: For best performance, a low ESR ceramic capacitor should be used. If C_BYPASS is not a low ESR ceramic capacitor, a 0.1uF ceramic
capacitor should be added in parallel to C_BYPASS.
TS51221
Final Datasheet
April 6, 2015
Rev 1.1
www.semtech.com
4 of 18
Semtech