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STLD20CP1 Folha de dados(PDF) 7 Page - STMicroelectronics

Nome de Peças STLD20CP1
Descrição Electrónicos  Power management for white LED and camera flash
PDF  19 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STLD20CP1 Folha de dados(HTML) 7 Page - STMicroelectronics

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STLD20CP1
Electrical characteristics
7/19
5
Electrical characteristics
Table 7.
Electrical characteristics for STLD20CP1 (TJ = -40 °C to 85 °C, VI = 3.4 V, CI = 2.2 µF,
CO1,2 = 2.2 µF, VO_SU = 15 V, VO_CP = 4 V, CCP = 1 µF, CFB_SU = 100 pF, L = 3.3 µH, DM1 =
DM2 = 1.6 V, typ. values @ 25 °C, unless otherwise specified)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Supply section
VI
Operating input voltage
2.8
6
V
VUVLO_H
Under-voltage lockout
HIGH
2.7
V
VUVLO_L
Under-voltage lockout
LOW
2.2
V
II
Supply current
ILED = 50mA, TF = 0
700
µA
Standby current
DM1= DM2 = TF = SEL = 0
1
µA
Dynamic performance
ν
Efficiency step-up
ILED = 20mA, VI = 2.8V to 6.0V
(1)
80
%
Backlight section, step-up
V_OVP
Over-voltage protection
16.5
V
VFB_SU
Feedback voltage
465
490
515
mV
IFB_SU
Feedback leakage current VFB_SU = 1V
0.1
0.5
µA
fSW
Frequency switching
1.3
MHz
Backlight section, step-up
RDSON
P_SW
Step-up switch resistance
TJ = 25°C, ISW = 100mA
0.8
Ω
ILK_SW
P_SW leakage current
VSW = 17V, DM1= DM2 = 0V
0.1
0.5
µA
IPK
Peak inductor current
1,2
A
ΔVRipple Output ripple step-up
ILED = 50mA
30
mVpp
ILED MAX Max LED current
VFB_SU/R_LED, R_LED = 10Ω
50
mA
ILED (LINE) Static line regulation
VI = 3.0V to 4.2V @ TJ = 25°C
(1)
-5
5
%
FB step
STEP feedback voltage
R_LED = 10
Ω
10
mV
Digital control section
V-DM1H
V-DM2H
V-TFH
V-SELH
High voltage threshold
VI = 2.8V to 6V
1.4
V
I-DM1H
I-DM1H leakage current
V-DM1H = 6V
0.1
0.5
µA
I-DM2H
I-DM2H leakage current
V-DM2H = 6V
0.1
0.5
µA
I-TFH
I-TFH leakage current
V-TFH = 6V
0.1
0.5
µA
I-SELH
I-SELH leakage current
V-SELH = 6V
0.1
0.5
µA



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