MP28200 – 5.5V, 200mA, 1.5MHz, ULTRA-LOW I
Q
, STEP-DOWN CONVERTER
MP28200 Rev.1.0 www.MonolithicPower.com 4
10/10/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 3.6V, T
J
= -40°C to +125°C, typical value is tested at T
J
= 25°C. The limit over temperature
is guaranteed by characterization, unless otherwise noted.
Parameters Symbol Condition Min Typ Max Units
Input voltage range
V
IN
2.0 5.5 V
Under-voltage lockout threshold
rising
V
IN_UVLO_R
1.65 1.8 1.95 V
Under-voltage lockout threshold
hysteresis
V
IN_UVLO_H
150 mV
Supply current (shutdown) I
SD 25
CTRL1/2/3 = 0V, or EN = 0 70 nA
Supply current (quiescent) I
Q_BUCK
No load, CTRL4/5 = 0V,
CTRL1/2/3 = H/L/H,
OUT = 1.8V, not switching
500 nA
High-side switch on resistance R
DSON H
0.25
Low-side switch on resistance R
DSON L
0.25
Switch leakage current I
LK_SW
CTRL1/2/3 = 0V, V
IN
= 5.5V,
V
SW
= 0V and 5.5V, T
J
= 25°C
-100 0 100 nA
High-side current limit I
LIM H
430 550 mA
Low-side switch valley current
(sourcing)
I
LIMV_L
250 350 mA
Low-side switch zero crossing
current
I
ZCD
0 20 mA
On time T
ON
V
IN
= 3.6V, V
OUT
= 1.8V 280 330 380 ns
Minimum on time T
MIN ON
60 ns
Minimum off time T
MIN OFF
100 ns
Maximum duty cycle
D
MAX
100 %
Output voltage accuracy V
OUT
CTRL1/2/3 = H/L/H,
T
J
= 25°C, I
OUT
= 0.1A
1.782 1.800 1.818
V
CTRL1/2/3 = H/L/H,
T
J
= -40°C to 85°C,
I
OUT
= 0.1A
1.773 1.827
Line/load regulation
(6)
From 2.5V to 5.5V, from 0A to
200mA
-1 1 %
Internal soft-start time T
SS
0.5 ms
Discharge resistance during
enable off
R
DIS_OFF
50
CTRL high logic CTRL
H
1.2 V
CTRL low logic CTRL
L
0.4 V
CTRL input current I
CTRL
V
CTRL
= 3.6V 1
nA
V
CTRL
= 0V 0
V
EN
= 0V 0
CTRL turn-on delay T
D
300 s
CTRL pull-down resistor R
PD
Not present when CTRL is
high to avoid I
Q
impact
2 M
Power good threshold PG
FB with respect to the
regulation
90 %
