LP3913 Datasheet, PDF (11/70 Pages) Texas Instruments – Power Management IC for Flash Memory-Based Portable Media Players

LP3913
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SNVS489I – NOVEMBER 2006 – REVISED SEPTEMBER 2013
LDO2: LOW DROPOUT LINEAR REGULATOR (continued)
Unless otherwise noted VIN1 = 3.6V, I_MAX = 150 mA, V_OUT = Default Value, C_VDD = 10.0 µF, C_LDO2 = 1.0 µF, ESR = 5 mΩ–500
mΩ, C_VREFH = 100 nF. Typical values and limits appearing in normal type apply for T_J = 25°C. Limits appearing in boldface
type apply over the entire junction temperature range for operation, 0°C to +125°C.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V_IN – V_OUT
PSRR
e_N
Dropout Voltage
Power Supply Ripple
Rejection
Analog Supply Output
Noise Voltage
Load Current = I_MAX
F = 1 kHz, Load Current =
I_MAX
F = 10 kHz, Load Current =
I_MAX
10 Hz < F < 100 kHz
60
150
mV
50
dB
35
50
µVrms
R_SHUNT
LDO Output Impedance
LDO Disabled, V_OUT =
Default Value
200
Ω
BUCK1 CONVERTER ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN2 = 3.6 V, V_OUT = default value, C_VIN2 = 10 µF, C_SW1 = 10 µF, L_SW1 = 2.2 µH Typical values and
limits appearing in normal type apply for T_J = 25°C. Limits appearing in boldface type apply over the entire junction
temperature range for operation, 0°C to +125°C. Modulation mode is PWM mode with automatic switch to PFM at light loads.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIN2
Input Voltage
2.7
6.0
V
V_OUT Range
Output Voltage
0.80V–2.00V in 50 mV Steps
Programming Range
0.8
2.0
V
ΔV_OUT
Static Output Voltage I_OUT = 200 mA, Including
Tolerance
Line and Load Regulation
−3
3
%
Line Regulation
I_OUT = 10 mA
V_IN2 = 2.5V − V_DD
0.2
%/V
Load Regulation
100 mA < I_OUT < 300 mA
0.002
%/mA
I_OUT
Continuous Output
Current
600
mA
Peak Output Current
Limit
850
1000
1150
mA
I_PFM
Max I_LOAD, PFM
Mode
75
mA
I_Q
Quiescent Current
I_OUT = 0 mA
30
90
µA
Buck1 Disabled
1
F_OSC
Internal Oscillator
Frequency
PWM Mode
2
MHz
η
Peak Efficiency
90
%
T_ON
Turn-on Time
To 95% Level ⁽¹⁾
1
ms
(1) Specified by design. Not production tested.
BUCK2 CONVERTER ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN3 = 3.6V, V_OUT = default value, C_VIN3 = 10 µF, C_SW1 = 10 µF, L_SW2 = 2.2 µH Typical values and
limits appearing in normal type apply for T_J = 25°C. Limits appearing in boldface type apply over the entire junction
temperature range for operation, 0°C to +125°C. Modulation mode is PWM mode with automatic switch to PFM at light loads.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIN3
Input Voltage
2.7
6.0
V
V_OUT Range
Output Voltage
1.80V–3.30V in 100 mV
Programming Range Steps
1.8
3.3
V
ΔV_OUT
Static Output Voltage I_OUT = 200 mA, Including
Tolerance
Line and Load Regulation
−3
3
%
Line Regulation
Load Regulation
I_OUT = 10 mA
V_IN3 = 2.5V − V_DD
100 mA < I_OUT < 300 mA
0.2
0.002
%/V
%/mA
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