TLE7368_10 Datasheet, PDF (13/41 Pages) Infineon Technologies AG – Next Generation Micro Controller Supply

4.4
Electrical Characteristics
TLE7368
General Product Characteristics
Electrical Characteristics
V_IN = V_{IN_STBY} = 13.5 V, T_j = -40 °C to +150 °C,
V_CCP = 9.0 V; SEL_STBY = Q_STBY; all voltages with respect to ground.
Pos. Parameter
Symbol
Limit Values
Unit
Min. Typ. Max.
Buck Regulator
4.4.1 Switching frequency f
280 370 425 kHz
4.4.2 Current transition
t_{r, I}
rise/fall time
–
50
–
ns
4.4.3
Power stage on
resistance
R_{ON, Buck}
–
–
280 mΩ
4.4.4
Power stage peak
current limit
I_{peak, SW}
2.5 –
4.6 A
4.4.5
Buck converter output V_{FB/L_IN}
voltage
5.4 –
4.4.6
Buck converter output V_{FB/L_IN}
voltage
5.4 –
4.4.7
Buck converter, turn on V_{IN, on}
threshold
–
–
4.4.8
Buck converter, turn off V_{IN, off}
threshold
3.5 –
4.4.9
Buck converter On/off V_{IN, hyst}
hysteresis
450 500
4.4.10 Bootstrap undervoltage V_{BST_UV, on} –
–
lockout, turn on
threshold
4.4.11
Bootstrap undervoltage V_{BST_UV, off}
lockout, turn off
threshold
V_SW + –
3.2
4.4.12 Bootstrap undervoltage V_{BST_UV, hyst} 0.2
–
lockout, hysteresis
Charge Pump
4.4.13 Charge pump voltage V_CCP
9
–
6.0 V
6.4 V
4.5 V
–
V
550 mV
V_SW + V
5.0
–
V
1
V
15 V
4.4.14 Charge pump voltage V_CCP
9
–
13.5 V
4.4.15 Charge pump switching f_CCP
frequency
1.0 –
2.5 MHz
Conditions
–
1)_{; slope magnitude 1 A; fixed}
internally
–
V_IN = 5.0 V;
V_SW ramped down from 5.0 V
to 3.7 V;
V_{FB/L_IN} = 5.0 V
I_Buck = 2.0 A²⁾
I_Buck = 100 mA²⁾
V_IN increasing
V_IN decreasing
V_{IN, hyst} = V_{IN, on} - V_{IN, off}
Bootstrap voltage increasing
Bootstrap voltage decreasing
V_{BST_UV, hyst} =
V V _{BST_UV, on} - _{BST_UV, off}
C_C1 = 100 nF;
C_C2 = 100 nF;
C_CCP = 220 nF
V_IN = 4.5 V;
C_C1 = 100 nF;
C_C2 = 100 nF;
C_CCP = 220 nF
–
Data Sheet
13
Rev. 2.1, 2010-11-22