TLF50211EL_15 Datasheet, PDF (15/27 Pages) Marl International Limited – 2.2 MHz Step-Down Regulator 500 mA, 5 V, low quiescent current

TLF50211EL
Buck Regulator
5.2
Electrical Characteristics
Electrical Characteristics: Buck Regulator
V_S = 6.0 V to 40 V, T_j = -40 °C to +150 °C, all voltages with respect to ground (unless otherwise specified)
Pos. Parameter
Symbol
Limit Values Unit Conditions
Min. Typ. Max.
5.2.1 Output voltage
V_FB
4.90 5.00 5.10 V
V_EN = 5.0V
7 V < V_S < 12V
100 mA < I_CC < 610 mA
PWM Mode
5.2.2 Output voltage
V_FB
4.90 5.10 5.30 V
V_EN = 5.0V
10V < V_S < 35V
I_CC = 100 µA
PFM Mode
5.2.3 Power stage on-resistance
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
Buck peak over current limit
Current transition rise/fall time
Maximum duty cycle
Minimum switch on-time
Minimum switch off- Time
Soft start ramp
5.2.10 Input under voltage shutdown
threshold
R_on
–
1.5 2.3
I_BUOC
0.85 –
1.7
t_R
–
100 –
D_max
–
–
100
T_ON,min
–
100 –
T_OFF,min –
200 –
t_start
300 450 750
V_S,off
3.75 –
–
Ω
tested at 100 mA,
V_S = 7.0V
A
–
mA/ns ¹⁾
%
2)
ns
1)
ns
1) _{PFM mode}
µs
V_FB rising from 5% to
95% of V_FB,nom
V
V_S decreasing
5.2.11
5.2.12
Input voltage startup threshold
Input under voltage shutdown
hysteresis
V_S,on
V_S,hyst
–
–
4.75 V
130 300 –
mV
5.2.13 Voltage threshold for transition
V_PWM/PFM –
–
from PWM to PFM
5.3 V
5.2.14 Frequency ratio for transition from f_PFM/PWM/ –
1.20 –
–
PFM to PWM
f_osc
1) Specified by design. Not subject to production test.
2) Consider “Chapter 4.2, Functional Range”.
V_S increasing
–
1)
1)
Data Sheet
15
Rev. 1.0, 2013-06-19