STW4810_0709 Datasheet, PDF (53/79 Pages) STMicroelectronics – Power management for multimedia processors

Electrical and timing characteristics
5.3.4
Table 38. VCORE DC/DC step-down converter (continued)
Symbol
Description
Test conditions
Min.
Typ.
VCORE regulator in sleep mode (SLEEP= ‘1’)
V_BAT
V_RIPPLE
Input power supply Battery voltage
VCORE output
voltage ripple
2.7
3.6
10
L_IR
L_DR
I_OUT
Line regulation
Load regulation
VCORE output
current
V_BAT: [2.7; 4.8]V
I_OUT: [0.1; 5] mA
P_EFF
Power efficiency
V_BAT= 3.6 V
I_OUT: [0.1; 5] mA
85
I_Q
Quiescent current I_OUT = 0 mA
20
L_IRT
Transient line
regulation
Δ V_BAT= 300 mV
t_R = t_F = 10 µs
7
1. Guaranteed by design
2. Guaranteed by design
VIO_VMEM DC/DC step-down converter
Table 39. VIO_VMEM DC/DC step-down converter
Symbol
Description
Test conditions
Min.
VIO_VMEM regulator in normal mode (SLEEP = ‘0’)
V_BAT
Input power supply Battery voltage
2.7
V_OUT
Output voltage ⁽¹⁾
-3%
V_RIPPLE Output ripple
L_IR
L_DR(2)
Line regulation
Load regulation
V_BAT: [2.7; 4.8]V
I_OUT: [0.1; 600] mA
I_OUT
Output current
P_EFF
Power efficiency
VBAT = 3.6 V,
VIO = 1.8 V
I_OUT= 100 mA
I_SHORT
Short circuit
current limitation⁽²⁾
0.9
I_Q
Quiescent current I_OUT = 0 mA
PSRR⁽²⁾
Power supply
rejection
Vpp = 0.3 V
[0; 20] kHz
40
L_IRT
L_DRT
Transient line
regulation
Transient load
regulation
ΔV_BAT = 300 mV
t_R = t_F = 10 µs
I_OUT= [1; 600] mA
t_R = t_F = 100 ns
Typ.
3.6
1.8
10
90
1.2
130
7
70
STw4810
Max.
Units
4.8
V
mVpp
10
mV
10
mV
5
mA
%
30
µA
mV
Max.
Units
4.8
+3%
10
10
600
V
V
mVpp
mV
mV
mA
%
1.4
A
250
µA
dB
mV
mV
52/78