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STCF07 数据表(PDF) 8 Page - STMicroelectronics

部件名 STCF07
功能描述  High power buck-boost white LED driver
PDF  26 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STCF07 数据表(HTML) 8 Page - STMicroelectronics

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Electrical characteristics
STCF07
8/26
Doc ID 16757 Rev 3
5
Electrical characteristics
TA = 25 °C, VI = 3.6 V, 2 x CI = 10 µF, CO = 1 µF, L = 2.2 µH, RHC = 0.22 Ω, RLC = 1.8 Ω,
RX = 15 kΩ
Table 6.
Electrical characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VI
Input voltage supply
2.7
5.5
V
UVLO
Undervoltage lockout
VI = 2.7 V
2.2
V
VPW_ONRESET Power ON reset threshold
VI rising
2.3
V
IO
Output current - high current
level
CSEL = VI; VI = 2.7 V to 5.5 V;
RHC = 0.16 Ω, POUT = 3.4 W
1000
mA
Output current - high current
level
CSEL = VI; VI = 3.2 V to 5.5 V;
RHC = 0.16 Ω, POUT = 4 W
1000
Output current - low current
level
CSEL = GND; VI = 3.3 V to 5.5 V;
RHC + RLC ~ 2 Ω
20
VOUT
Regulated voltage range
2.5
5.3
V
ILIM
Inductor peak current
VI = 2.7 V, VOUT shorted during
operation
2.3
A
FB1
Feedback voltage
Low current (CSEL = 0 V)
152
160
168
mV
FB2
Feedback voltage
High current (CSEL = VI)
152
160
168
mV
RON_
FB1-FB2 ON resistance
High current (CSEL = VI)
IO = 800 mA
90
m
Ω
IQ
Quiescent current in
shutdown mode
EN = GND
1
µA
Quiescent current in high
current mode
EN = VI; CSEL = VI; VI = 3.3 V to
5.5 V; RHC = 0.22 Ω
1.8
mA
fs
Frequency
VI = 2.7 V
1.8
MHz
n
Efficiency
VI = 3.2 to 4.2 V, IO = 800 mA
85
%
OVP
Output overvoltage
protection
VI = 5.5 V, no load
5.5
V
OVHYST
Overvoltage hysteresis
VI = 5.5 V, no load
0.3
V
OTP
Overvoltage protection
VI = 5.5 V
140
°C
OTHYST
Overvoltage hysteresis
VI = 5.5 V
20
°C
VNTC
NTC voltage reference
VI = 2.7 V to 5.5 V
1.8
V
VRX
NTC voltage threshold
INTC = 1 mA Max
1.2
V
NTCLEAK
RX-NTC switch OFF leakage
Shutdown mode,
VNTC = 2 V - VRX = GND
1µA
VIL
Input logic signal level CSEL,
EN
VI = 2.7 V to 5.5 V
00.4
V
VIH
1.4
3



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