33702 Datasheet, PDF (6/24 Pages) Motorola, Inc – 3.0 A Switch-Mode Power Supply with Linear Regulator

Freescale Semiconductor, Inc.
STATIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions -40°C ≤ T_J ≤ 125°C unless otherwise noted. Input voltages V_IN1 = V_IN2 = 3.3 V using the typical
application circuit (see Figure 20) unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
GENERAL
Operating Voltage Range (V_IN1, V_IN2)
V_IN
2.8
–
6.0
V
Start-Up Voltage Threshold (Boost Switching)
V_ST
–
1.6
1.8
V
V_BST Undervoltage Lockout
V_{BST_UVLO}
–
6.0
–
V
Input DC Supply Current (Normal Operation Mode, Enabled)
I_IN
–
60
–
mA
V_IN1 Pin Input Supply Current (EN1 = EN2 = 0)
I_IN1
–
9.0
–
mA
V_IN2 Pin Input Leakage Current (EN1 = EN2 = 0)
I_IN2
–
TBD
–
µA
V_DDI Internal Supply Voltage
V_DDI
3.0
–
3.3
V
V_DDI Maximum Output Current
I_DDI
–
TBD
–
µA
BUCK CONVERTER
Buck Converter Output Voltage Range
I_VOUT = 30 mA to 3.0 A, V_IN1 = V_IN2 = 2.8 V to 6.0 V
V_OUT
V
0.8
–
5.0
Buck Converter Feedback Voltage
I_VOUT = 30 mA to 3.0 A, V_IN1 = V_IN2 = 2.8 V to 6.0 V. No R_B Resistor.
Includes Load Regulation Error
V_INV
V
0.784
0.8
0.816
Buck Converter Voltage Margining Step
V_MVO
–
1.0
–
%
Buck Converter Line Regulation
V_IN1 = V_IN2 = 2.8 V to 6.0 V, I_VOUT = 3.0 A
REG_LNVO
-1.0
–
%
1.0
Buck Converter Load Regulation
I_VOUT = 30 mA to 3.0 A
REG_LDVO
-1.0
–
%
1.0
V_OUT Input Leakage Current
V_OUT = 5.0 V
I_VOUTLK
µA
–
TBD
–
High-Side Power MOSFET Q1 R_DS(ON)
I_D = 1.0 A, T_A = 25°C, V_BST = 8.0 V
R_DS(ON)
–
mΩ
–
50
Low-Side Power MOSFET Q2 R_DS(ON)
I_D = 1.0 A, T_A = 25°C, V_BST = 8.0 V
R_DS(ON)
–
mΩ
–
50
Buck Converter Peak Current Limit (High Level)
I_{H_LIM}
3.4
4.5
6.0
A
Buck Converter Valley Current Limit (Low Level)
I_{L_LIM}
1.7
2.25
3.0
A
V_OUT Pull-Down MOSFET Q3 Current Limit
T_A = 25°C, V_BST = 8.0 V
I_{Q3_LIM}
A
–
2.0
–
V_OUT Pull-Down MOSFET Q3 R_DS(ON)
I_D = 1.0 A, T_A = 25°C, V_BST = 8.0 V
R_DS(ON)
–
Ω
–
1.0
Thermal Shutdown (Switcher, V_OUT FET)
T_SD
150
170
190
°C
Thermal Shutdown Hysteresis
T_SDHys
–
15
–
°C
33702
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