EP5388QI Datasheet, PDF (4/14 Pages) Enpirion, Inc. – 800mA Synchronous Buck Regulator With Integrated Inductor 3mm x 3mm x 1.1mm Package

July 2008
EP5388QI
Recommended Operating Conditions
PARAMETER
Input Voltage Range
Output Voltage Range
Output Current
Operating Ambient Temperature
Operating Junction Temperature
SYMBOL
V_IN
V_OUT
I_OUT
T_A
T_J
MIN
2.4
0.603
0
-40
-40
MAX
5.5
V_IN – 0.5
800
+85
+125
UNITS
V
V
mA
°C
°C
Thermal Characteristics
PARAMETER
SYMBOL
TYP
Thermal Resistance: Junction to Ambient (0 LFM)*
Thermal Shutdown Trip Point
Thermal Shutdown Trip Point Hysteresis
θ_JA
T_J-TP
100
+150
15
* Based on a 2 oz. copper board and proper thermal design in line with JEDEC EIJ-JESD51 standards.
UNITS
°C/W
°C
°C
Electrical Characteristics
NOTE: V_IN = 3.6V, C_IN = 4.7µF 0603 MLCC, C_OUT = 47uF 1206 MLCC. T_A = -40°C to +85°C unless otherwise noted.
Typical values are at T_A = 25°C.
PARAMETER
Under-Voltage Lockout
UVLO Hysteresis
V_OUT Initial Accuracy
Line Regulation
Load Regulation
Temperature Variation
Overall V_OUT Accuracy
(Line, Load, and
Temperature combined)
Dynamic Voltage Slew
Rate^†
Continuous Output
Current
Shut-Down Current
PFET OCP Threshold
Feedback Pin Voltage
Feedback Pin Input
Current
VS2-VS0 Threshold
VS2-VS0 Pin Input
Current
Enable Pin Voltage
Thresholds
Enable Pin Input Current
Operating Frequency
PFET On Resistance
NFET On Resistance
Dropout Resistance
SYMBOL
V_UVLO
TEST CONDITIONS
V_IN going low to high
∆V_{OUT_Initl}
∆V_{OUT_linel}
∆V_{OUT_load}
∆V_{OUT_templ}
∆V_{OUT_All}
V_slew
I_OUT
I_SD
I_LIM
V_FB
I_FB
V_{SX_TH}
I_VSX
V_{EN_TH}
I_EN
F_OSC
R_DS(ON)
R_DS(ON)
R_DROPOUT
T_A = 25C, 2.4V ≤ V_IN ≤ 5.5V
2.4V ≤ V_IN ≤ 5.5V
0A ≤ I_LOAD ≤ 800mA
-40°C ≤ T_A ≤ +85°C
2.4V ≤ V_IN ≤ 5.5V
-40°C ≤ T_A ≤ +85°C
0A ≤ I_LOAD ≤ 800mA
-20°C ≤ T_A ≤ +85°C
-40°C ≤ T_A ≤ +85°C
Enable = Low
2.4V ≤ V_IN ≤ 5.5V
-20°C ≤ T_A ≤ +85°C
0A ≤ I_LOAD ≤ 800mA
Pin = Low
Pin = High
Pin = Low
Pin = High
ENABLE = Vin = 3.6V
MIN
TYP
MAX UNITS
2.2
2.3
V
0.145
V
-2
+2
%
0.06
%/V
0.0003
%/mA
0.008
%/°C
-3
+3
%
1.125
800
750
0.585
1.5
0.75
1000
0.603
1.875
0.621
V/mS
mA
µA
mA
V
10
nA
0.0
1.4
0.4
V_IN
V
1
nA
0.0
1.4
0.2
V_IN
V
2
µA
4
MHz
340
mΩ
270
mΩ
450
mΩ
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