33702 Datasheet, PDF (7/24 Pages) Motorola, Inc – 3.0 A Switch-Mode Power Supply with Linear Regulator

Freescale Semiconductor, Inc.
STATIC ELECTRICAL CHARACTERISTICS (continued)
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
ERROR AMPLIFIER (BUCK CONVERTER)
Input Impedance (Note 7)
R_IN
–
500
–
kΩ
Output Impedance (Note 7)
R_OUT
–
150
–
Ω
DC Open Loop Gain (Note 7)
A_VOL
–
80
–
dB
Gain Bandwidth Product (Note 7)
GBW
–
35
–
MHz
Slew Rate (Note 7)
SR
–
200
–
V/µs
Output Voltage Swing – High Level
V_IN1 > 3.3 V, I_OEA = -1.0 mA (Note 7)
V_{EA_OH}
V
–
2.0
–
Output Voltage Swing – Low Level
I_OEA = -1.0 mA (Note 7)
V_{EA_OL}
V
–
0.4
–
Slope Compensation Ramp (Note 7)
V_SCRamp
–
0.6
–
V
OSCILLATOR
Oscillator Low Level Output Voltage (Pin CLKSYN), CLKSEL Open
V_{OSC_OL}
–
–
0.4
V
Oscillator High Level Output Voltage (Pin CLKSYN), CLKSEL Open
V_{OSC_OH}
3.0
–
–
V
Oscillator Input Voltage Threshold (Pin CLKSYN), CLKSEL Grounded
V_{OSC_IH}
1.2
1.6
2.0
V
Oscillator Frequency Adjusting Reference Voltage (FREQ)
V_FREQ
–
1.29
–
V
Oscillator Frequency Adjusting Resistor Range
R_FREQ
100
–
200
kΩ
BOOST REGULATOR
Boost Regulator Output Voltage
I_BST = 20 mA, V_IN1 = V_IN2 = 2.8 V to 6.0 V
V_BST
V
7.5
8.0
8.5
Boost Regulator Start-Up Voltage
V_{IN_BSU}
–
1.6
1.8
V
Boost Regulator Peak Current Limit (Power FET Peak Current)
I_{P_BD}
0.75
1.0
1.5
A
Boost Regulator Power FET Valley Current Limit (Low Level)
I_{L_BD}
450
600
800
mA
Boost Power FET R_DS(ON)
I_BD = 1.0 A, T_A = 25°C
R_DS(ON)
–
mΩ
150
400
Boost Regulator Recommended Output Capacitor
C_BST
–
10
–
µF
Boost Regulator Recommended Output Capacitor Maximum ESR
ESR_CBST
–
100
–
mΩ
Notes
7. Design information only. It is not production tested.
MOTOROLA ANALOG INTEGRATED CI_FRC_oU_rIT_MD_oE_rV_eICE_InD_fA_oT_rA_{mation On This Product,}
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33702
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