EP53A7LQ Datasheet, PDF (5/17 Pages) Enpirion, Inc. – 1000mA Synchronous Buck Regulator with Integrated Inductor

EP53A7LQI/EP53A7HQI
PARAMETER
LLM Pin Current
Operating Frequency
Soft Start Operation
Soft Start Slew Rate
Soft Start Rise Time
SYMBOL
I_LLM
F_OSC
TEST CONDITIONS
ΔV_SS
ΔT_SS
EP53A7LQI (VID only)
EP53A7HQI (VID only)
EP53A7LQI (VFB mode); Note 2
MIN
TYP
<100
5
MAX
UNITS
nA
MHz
4
8
V/mS
170
225
280
μS
Note 1: Parameter guaranteed by design
Note 2: Measured from when V_IN ≥ V_{UVLO_R} & ENABLE pin crosses its logic High threshold.
Typical Performance Characteristics
95
90
85
LLM
80
75
70
65
60
55
50
45
10
PWM
V_OUT=1.2V
100
Load Current (mA)
1000
Efficiency vs. Load Current: V_OUT = 1.2V, V_IN (from
top to bottom) = 2.5, 3.3, 3.7, 4.3, 5.0V
95
LLM
90
85
80
75
70
65
60
55
50
45
10
PWM
V_OUT=2.5V
100
Load Current (mA)
1000
Efficiency vs. Load Current: V_OUT = 2.5V, V_IN (from
top to bottom) = 3.3, 3.7, 4.3, 5.0V
95 _LLM
90
85
80
75
70
65
60
55
50
45
10
PWM
V_OUT=1.8V
100
Load Current (mA)
1000
Efficiency vs. Load Current: V_OUT = 1.8V, V_IN (from
top to bottom) = 2.5, 3.3, 3.7, 4.3, 5.0V
95
LLM
90
85
80
75
70
65
60
55
50
45
10
PWM
V_OUT=3.3V
100
Load Current (mA)
1000
Efficiency vs. Load Current: V_OUT = 3.3V, V_IN (from
top to bottom) = 3.7, 4.3, 5.0V
©Enpirion 2009 all rights reserved, E&OE
01543
5
11/11/2009
www.enpirion.com
Rev:B