34701_07 Datasheet, PDF (8/38 Pages) Freescale Semiconductor, Inc – 1.5 A Switch-Mode Power Supply with Linear Regulator

ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics (continued)
Characteristics noted under conditions -40°C ≤ T_A ≤ 85°C unless otherwise noted. Input voltages VIN1 = VIN2 = 3.3 V using
the typical application circuit (see Figure 33) unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
BUCK CONVERTER (CONTINUED)
High-Side Power MOSFET Q1 RDS(ON) ^{(9), (10)}
ID = 500 mA, T_A = 25°C, VBST = 8.0 V
Low-Side Power MOSFET Q2 RDS(ON) ^{(9), (10)}
ID = 500 mA, T_A = 25°C, VBST = 8.0 V
R_DS(ON)Q1
mΩ
–
60
–
R_DS(ON)Q2
mΩ
–
65
–
Buck Converter Peak Current Limit (High Level)
VOUT Pulldown MOSFET Q3 Current Limit
T_A = 25°C, VBST = 8.0 V
VOUT Pull-down MOSFET Q3 R_DS(ON)⁽¹⁰⁾
ID = 1.0 A, VBST = 8.0 V
I_LIMH
I_LIMPQ3
-4.0
-2.7
-1.5
A
0.75
–
A
2.0
R_DS(ON)PQ3
–
Ω
–
1.9
Thermal Shutdown (VOUT Pull-down MOSFET Q3) ⁽⁹⁾
Thermal Shutdown Hysteresis ⁽⁹⁾
Notes
9. Design information only. This parameter is not production tested.
10. ID is the MOSFET drain current.
T_SD
T_HYS
150
170
190
°C
–
10
–
°C
34701
8
Analog Integrated Circuit Device Data
Freescale Semiconductor