ELM601BA Datasheet, PDF (4/7 Pages) ELM Technology Corporation – ELM601BA 1.5A 2.5MHz high efficiency synchronous PWM step-down DC/DC converter

ELM601BA 1.5A 2.5MHz
high efficiency synchronous PWM step-down DC/DC converter
■Electrical characteristics
Vin=5.0V, Cin=10µF, Cout=10µF, L=1.2µH, Top=25°C, unless otherwise noted
Parameter
Symbol
Test condition
Min. Typ. Max. Unit
Supply voltage
Vin
2.9
5.5 V
Output voltage
Vout ^Adjustable
1
5V
Output current
Iout
1.5 A
Output voltage tolerance *
ΔVout ^{Vin=3.6V to 5.0V, no load}
-2.5
+2.5 %
Feedback voltage
Vfb ^Top=+25°C
0.98 1.00 1.02 V
Current limit
Ilimit ^{Peak inductor current}
2.0
A
Under-voltage lockout
UVLO
Rising Vin
Hysteresis
2.60 2.70 2.80 V
250
mV
Quiescent current
Iq ^{EN=Vin, no switching}
300
µA
VIN shutdown current
Ishdn ^EN=GND
1
10 µA
High side switch resistance
RdsonP ^Ilx=100mA
150
mΩ
Low side switch resistance
RdsonN ^Ilx=-100mA
125
mΩ
SW leakage current
Ilk(sw)
Vin=5.5V, SW=0V, EN=GND
Vin=5.5V, SW=5.0V, EN=GND
-10
1
-1
10 _µA
Line regulation
ΔVline-reg Vin=3.6V to 5.0V, Iout=0A
-1.0
%
Load regulation
ΔVload-reg Vin=5.0V, Iout=10mA to 1.5A
-1.0
%
Oscillator frequency
Fosc
2.0 2.5 3.0 MHz
Soft-start time
Tss
100
µs
EN input high current
Ien_hi EN=Vin
-2.0
2.0 µA
EN input low current
Ien_lo EN=GND
-2.0
2.0 µA
EN input high threshold
Ven_hi
1.2
V
EN input low threshold
Ven_lo
0.4 V
FB over voltage protection
Vovp
115
%
Thermal shutdown temperature
Tsd Junction temperature
+160
°C
Thermal shutdown hysteresis Tsd_hys Junction temperature
10
°C
* ^{: The “Output voltage tolerance” includes output voltage accuracy, voltage drift over temperature and line regulation.}
■Test circuits
Vin
VIN SW
ELM601BA
EN FB
GND
L=1.2µH
Cout=
10µF
Cin=10µF
Vout
R1
RL
R2
7- 4
Rev.1.0